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Development of Novel One-Pot Multicomponent Reactions for the Synthesis of Bioactive Sulphur Heterocycles

Author: Mr. Rahul Balajirao Jadhav; Dr. Sandeep Vishwanathrao Shinde
Publisher: Zenodo
DOI: 10.5281/zenodo.17698783
Source: https://zenodo.org/records/17698783/files/21.pdf
INTERNATIONAL JOURNAL OF MULTIDISCIPLINARY RESEARCH AND ANALYSIS
ISSN(p in ): 2643-9840, ISSN(online): 2643-9875
Volume 08 Issue 10 Oc obe 2025
DOI: 10.47191/ijm a/ 8-i10-21, Impac Fac o : 8.266
Page No. 5695-5704
IJMRA, Volume 08 Issue 10 Oc obe 2025 www.ijm a.in Page 5695
De elopmen o No el One-Po Mul icomponen Reac ions o he Syn hesis o
Bioac i e Sulphu He e ocycles
M . Rahul Balaji ao Jadha 1, D . Sandeep Vishwana h ao Shinde2
1Resea ch Schola , Depa men o Chemis y, P a ibha Nike an Maha idyalay Nanded.
2Associa e P o esso , Depa men o Chemis y, P a ibha Nike an Maha idyalay Nanded.
ABSTRACT:
Backg ound: The de elopmen o e icien , ep oducible, and en i onmen ally benign p o ocols o he syn hesis o bioac i e
he e ocycles is desi able, pa icula ly in esou ce- limi ed places. Due o i s s uc u al p ope ies and syn he ic a ailabili y, SH-01
was iden i ied as a no el molecule wi h pu a i e pha macological in e es . Se e al s udies in he pas ha e i e a i ely elabo a ed
on sol en pola i y, while some ha e ocused on ca aly ic sys ems esponsible o al e ing he cou se o a eac ion, bu a ew ha e
ela ed hem o emo e and semi-u ban labo a o ies.
Objec i es: This s udy sough o (i) op imize he yield o SH-01 using di e en sol en –ca alys sys ems; ii) con i m i s s uc u e ia
IR and NMR spec oscopy; and
iii) de elop a ield-app op ia e e hical syn hesis p o ocol sui able o collabo a i e deploymen .
Me hods: SH-01 was syn hesized in he p esence o a ious sol en s and ca alys s (e hanol- ZnCl 2, DMSO-FeCl 3, and oluene-Cu
(OAc) 2). Read ou and you ge a eac ion yield compa ison. The IR spec oscopy was used o unc ional g oups analysis, and he
^1H NMR was u ilized o p o on en i onmen and s uc u al con i ma ion. All da a we e by genuine and e i iable li e a u e ha
was analysed humanely.
Resul s: The highes con e sion in his es was ha o e hanol–ZnCl2, showing excellen ca aly ic ac i a ion and sol en
compa ibili y. IR spec a showed NH and CN s e ching a 3320 cm⁻¹ and 2200 cm⁻¹, espec i ely. The NMR analysis showed he
p esence o a oma ic p o on signals (7.2–7.8 ppm) and a deshielded NH peak a 9.5 ppm, indica ing an in amolecula hyd ogen
bonding [54]. The syn hesis could be easily eplica ed a he ield le el and is ep oducible.
Conclusion: SH-01 was success ully syn hesized, and he de e mined s uc u e was deemed legi ima e wi h g een, easily a ailable
eagen s. This opens up a scalable and socially esponsible ou e o u al chemis y labs using e hanol–ZnCl₂ as he sol en sys em.
These indings can se e as e idence o sol en –ca alys syne gy and pa icipa o y design in g een chemis y s udies, and
encou age u u e bioac i i y sc eening and communi y-ini ia ed educa ion.
KEYWORDS: SH-01 syn hesis, sol en –ca alys e ec , IR spec oscopy, NMR analysis, g een chemis y, u al deploymen ,
pa icipa o y esea ch
1. INTRODUCTION
1.1 Backg ound and Signi icance
The sul u -con aining he e ocyclic moie y is o p ime impo ance in con empo a y medicinal chemis y, ag ochemicals, and
ma e ials science, owing o i s unique physicochemical p ope ies and widesp ead biological ac ions. Thiazoles, hiadiazoles, and
benzo hiazines a e impo an molecules ound in se e al he apeu ic agen s such as sul a hiazole (An ibac e ial), iluzole
(Neu op o ec i e), and ioxolone (An i-in lamma o y) (Pa el e al., 2020). The p esence o Sulphu a oms in hese polycycle
compounds imp o es molecula lipophilici y, edox po en ial, and a ge speci ici y ha may appeal o medicinal chemis s o
hei ad an ages in he d ug designing p ocess (Kuma e al., 2021).
Un o una ely, adi ional syn he ic p o ocols owa ds sul u -con aining he e ocycles a e usually cha ac e ized by a ela i ely low
a om economy and necessi a e he u iliza ion o mul i- s ep and oxic eagen s. No only do hese limi a ions p o ide he b akes o
SCALING, bu o decen alized/ esou ce-limi ed labo a o ies, hey in oduce en i onmen al and ope a ional challenges.
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1.2 Mul icomponen Reac ions: A S a egic Oppo uni y
Mul icomponen eac ions (MCRs) p o ide an exquisi e way o di e si y-o ien ed syn hesis when he cons uc ion o mo e
complex molecula amewo ks in ol es a apid eac ion be ween h ee, o e en be e , ou o mo e subs a es unde mild
condi ions. MCRs ha e gained an impo an s a us because o hei con e gency, ope a ional simplici y, and compliance mos ly
wi h he g een chemis y p inciples in con as o classical “one-s ep o ganic syn hesis (Dömling & Ugi, 2000). MCRs ha e been
widely employed o ni ogen and oxygen he e ocycles cons uc ion, bu a e less ubiqui ous in he assembly o sul u -based
amewo ks Zhao, Li, & Wang, 2022;
This design, wi h sul u mo i s inco po a ed s a egically in o MCR amewo ks, may p o ide a boos owa d bioac i e chemical
space in he an imic obial as well as an icance domains, whe e esis ance and selec i i y a e s ill ca dinal issues o mankind.
1.3 Knowledge Gaps and Resea ch Need
Exis ing modes MCR s a egies owa ds sulphu he e ocycles, howe e , a la ge, epo indi idual such s uc u es.
• Na ow subs a e scope
• Ha sh eac ion condi ions
• Subop imal yields and selec i i y
• Limi ed biological alida ion
Fu he mo e, ew s udies ha e in es iga ed he e ec o eac ion condi ions, such as sol en , ca alys , and empe a u e, on he
balance be ween syn he ic e iciency and ecological accep abili y. Ano he need is o ield-deployable p o ocols, pa icula ly in
semi-u ban o u al labo a o ies whe e in as uc u e may be limi ed bu he e a e p essing demands o locally ele an chemical
inno a ion.
1.4 Objec i es and Scope
This s udy aims o:
• Design and syn hesis o new one-po MCRs o he p oduc ion o di e en chemical s uc u es con aining sul u
he e ocycles
• The g een sol en s and he benign ca alys s we e used o op imize eac ion condi ions.
• Analyse he syn hesized compounds by spec oscopic and c ys allog aphic me hods
• Sc een p elimina y bioac i i y (an imic obial and an icance ) o ace sui able leads.
• E alua e a om economy and en i onmen al me ics o ield-app op ia eness and scalabili y
1.5 Ra ionale and Humanised Rele ance
This esea ch is based on a wo old jus i ica ion: scien i ic inno a ion and social esponsibili y. We s i e o enable molecula
bluep in s ha a e cos -compe i i e wi h bio-p ocesses – by design o e icien , ep oducible, and en i onmen ally benign
eac ions. The p o ocols de eloped he ein a e designed o implemen hese eac ions in semi-u ban and u al esea ch se ings,
whe e a lack o in as uc u e se es as a ba ie o he b oade access o high-impac chemical esea ch.
This humanisa ion o oxici y science is also consis en wi h he la ge d i e o do e hical and pa icipa o y science — making su e
ha he ad an ages h ough chemical inno a ion a e a ailable, wo kable, and ai .
2. REVIEW OF LITERATURE
2.1 His o ical Con ex o Sul u He e ocycles
Due o hei occu ence in na u al p oduc s and syn he ic d ugs, sul u he e ocycles ha e a long his o y in bo h o ganic and
medicinal chemis y. Such ea ly disco e ies as sul anilamide and hiazole de i a i es ha e pa ed he way o an imic obial
he apies du ing he middle o he 20 h cen u y (Mülle & Hin ichs, 2004). The chemical s uc u e o sul u he e ocycles has
e ol ed wi h ime o gi e compounds wi h be e pha macokine ics and a ge speci ici y, including benzo hiazine, hiadiazole,
and hiazolidinone.
Ad ances in syn he ic me hods ha e enabled access o sul u he e ocycles ou side his ela i ely limi ed chemical space, mo ing
om classical condensa ion eac ions o me al- ca alyzed cycliza ions. Ne e heless, mos o hese app oaches a e s ill e y labo -
in ensi e and no wi hou sus ainabili y p oblems.
2.2 Syn he ic S a egies o Sul u He e ocycles
Commonly, sulphu he e ocycles a e p epa ed ia mul i-s age p ocedu es wi h hiou ea, hiosemica bazide, o S-con aining acids
as key s a ing ma e ials. The e exis a ious me hods o he syn hesis o hiazoles, including some Han zsch- ype eac ions;
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oxida i e cycliza ion o hiosemica bazides o yield hiadiazoles (e.g., Thaku ia e al., 2013; Kuma e al. [7]). While hese
app oaches a e sound, hey o en en ail:
• High empe a u es
• Toxic sol en s (e.g., DMF, DCM)
• Me al ca alys s (e.g., Cu, Pd)
Recen p og ess has ocused on mic owa e-assis ed syn hesis, ionic liquids, and sol en - ee eac ion de elopmen s o enhancing
he e iciency and sus ainabili y (Singh & Sha ma, 2020). Howe e , hese echnological ad ancemen s a e no gene alized and
p ac ical, especially in ield o semi-u ban labo a o ies.
Figu e 1: Syn he ic S a egies o Sul u He e ocycles1
2.3 Mul icomponen Reac ions in He e ocyclic Chemis y
MCR, an e ec i e and powe ul me hodology o he cons uc ion o he e ocycles. Classical examples include he Ugi, Biginelli,
and Passe ini eac ions, which ha e been modi ied o gi e ni ogen and oxygen he e ocycles (Dömling, 2006). While MCRs
in ol ing sul u ha e been spo adically epo ed as one-po p o ocols o hiazole o hiadiazole gene a ion, MCRs a e s ill
unde de eloped in sul u chemis y.
Fo ins ance, Zhang e al. In 2021, a h ee-componen hiazole syn hesis ia he eac ions be ween aldehydes, hiou ea, and α-
haloke ones in acid media was desc ibed. Al hough p omising, he scope o eac ions is limi ed o elec on- ich subs a es and
equi es downs eam pu i ica ion s eps ollowing he eac ion, which dec eases o e all h oughpu .
2.4 Bioac i i y o Sul u He e ocycles
He e a e a ew classes o biological compounds con aining sul u ha include sul anyl he e ocycles:
• An imic obial: Thiazoles and hiadiazoles ha dis up bac e ial cell wall syn hesis and enzyme unc ions (Alam e al.,
2018).
• Benzo hiazines and hiazolidinones (an icance ): Benzo hiazines and hiazolidinones ha e been epo ed o modula e
apop osis and inhibi se e al kinases (Rani e al. 2020).
• An i- in lamma o y and neu op o ec i e: Sul u he e ocycles in e ac wi h COX
enzymes; NMDA ecep o s (Gup a
& Jain, 2017).
E en hough one o he as po en ial coho s o in i o s udies is hose compounds ha a e unable o be e alua ed due o
hu dles aced while syn hesising, i equi es no only passi e delays bu also ac i e s a egies, such as isola ing compound lib a ies
ha ge delayed in ea ly s age sc eening. P o ocols o apidly iden i y lead candida es a e equi ed, which combine a syn he ic
e o wi h apid bioassays.
2.5 G een Chemis y and Field Adap abili y
Recen yea s ha e seen he inc easing in luence o g een chemis y on he e ocyclic syn hesis; he use o sol en minimiza ion,
ene gy e iciency, and non- oxic eagen s a e some examples o hese p inciples. Se e al p o ocols ha e subs i u ed chlo ina ed
sol en s wi h e hanol, wa e , and o he bio-based sol en s (Anas as & Zimme man 2003). Me al-based sys ems and o he benign
al e na i es ha e been used as ca alys s, iz, L-p oline o ci ic acid.
E en so, ew s udies a e ocused on designing eac ions ha can be eadily applicable in he ield. Semi-u ban o u al labs may
ha e limi ed access o mode n ins umen a ion and eagen s. Hence, he gap ha needs o be illed wi h obus , ep oducible,
and esou ce-ligh syn heses wiley o pa icipa o y and e hical esea ch pa adigms.
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2.6 Iden i ied Gaps and Resea ch Oppo uni ies
The li e a u e e eals se e al gaps:
• Use o MCRs o Sul u He e ocycles is es ic ed
• Limi ed subs a e scope and low scalabili y
• Failu e o In eg a e Syn hesis wi h Bioac i i y Sc eening
• Neglec o g een me ics and obus ness in he ield
He ein, we sough o p o ide a aluable asse in he o m o one-po MCRs o sul u he e ocycles as well as sus ainabili y
subs ances and me hods, alida ing bioac i i y h ough accessible assays by b idging hese gaps.
3. RESEARCH METHODOLOGY
3.1 Resea ch Design and Ra ionale
He ein, he p esen s udy epo s an explo a o y-expe imen al design ha enabled he de elopmen o inno a i e one-po
Mul icomponen Reac ions (MCRs) o accessing sul u he e ocycles as po en ial bioac i e agen s. The design in eg a es:
• Me hod de ails: syn he ic chemis y p o ocols o eac ion disco e y
• G een chemis y p inciples o sus ainabili y
• Bioassay-guided sc eening o unc ional alida ion
This p o ocol is designed o be ep oducible, scalable, and adap able in esou ce-sca ce o semi- u ban labo a o y en i onmen s.
The documen a ion o all p ocedu es is done in ield- iendly o ma s o ensu e pa icipa o y dissemina ion.
3.2 Ma e ials and Reagen s
The chemicals employed we e all pu chased om epu able supplie s and came as analy ical g ade ma e ials. Key eagen s
included:
• Ca bonyl compounds (e.g., aldehydes, ke ones)
• Sul u dono s (e.g., hiou ea, hiosemica bazide)
• Me hylenic compounds (malononi ile, e hyl ace oace a e)
• Ca alys s (L-p oline, ci ic acid, o no ca alys o sol en - ee eac ions)
P io i y g een me ics we e adop ed o sol en selec ion, and en i onmen ally iendly e hanol, wa e , and bio-based al e na i es
we e hen p io i ized. Halogena ed sol en s and hea y me al ca alys s we e no employed.
3.3 Reac ion Se up and P ocedu e
A ep esen a i e eac ion p o ocol is as ollows:
1. Round ound-bo om lask is used o mix h ee o mo e componen s in a single po
2. S i ing a oom empe a u e o high empe a u es (40–80°C), acco ding o he eac i i y o he subs a e.
3. TLC (Thin Laye Ch oma og aphy): p esence o he emaining s a ing ma e ial.
4. P oduc isola ion h ough il a ion o sol en e apo a ion.
5. Makes use o ec ys alliza ion o column ch oma og aphy he e (i necessa y)
The eac ions we e done unde bo h con en ional hea ing as well as mic owa e-assis ed condi ions, and yields and eac ion
imes we e also compa ed.
3.4 Op imiza ion Pa ame e s
Fo obus ness and ield adap abili y, he ollowing pa ame e s we e a ied sys ema ically:
• Sol en ype and olume
• Ca alys p esence and loading
• Tempe a u e and eac ion ime
De elopmen o No el One-Po Mul icomponen Reac ions o he Syn hesis o Bioac i e Sulphu He e ocycles
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• S oichiome y o eac an s
Figu e 2: Op imiza ion Pa ame e s
Each a ian was judged by:
• Yield (%)
• Pu i y ( ia mel ing poin and TLC)
• A om economy and E- ac o
• Replicabili y in low- esou ce se ings
3.5 Cha ac e iza ion o Syn hesized Compounds
P oduc s we e cha ac e ized using:
• Mel ing poin analysis
• Fo unc ional g oup iden i ica ion: In a ed spec oscopy (IR)
• Nuclea Magne ic Resonance (NMR) s uc u e alida ion (whe e applicable)
• A omic e i ica ion o he molecula weigh (MS o Mass Spec oscopy)
Fo ield se ings, he echniques used o con i m compound iden i y we e colo ime ic es s and solubili y p o iling.
3.6 Bioac i i y Sc eening
P elimina y bioac i i y sc eening o he syn hesized compounds agains :
• Resul s and in e p e a ion An imic obial Tes ing: Disc di usion me hod agains G am- posi i e and nega i e s ains.
• An ioxidan assays (DPPH adical sca enging)
• MTT assay on selec cell lines, whe e possible — a cy o oxici y es
We selec ed assays wi h simple, obus , semi-u ban-lab-compa ible p ocedu es. Biological e alua ions we e done in iplica e
o s a is ical eliabili y.
3.7 E hical and Pa icipa o y Sa egua ds
The app oach was c ea ed o be e hical and communi y-led:
• No animal es ing was conduc ed.
• We conduc ed wo kshops and eedback sessions wi h p ac ice collabo a o s o inalize p o ocols and ensu e ha hey
a e con ex ually ele an .
• En i onmen al and sa e y measu es o was e disposal we e aligned wi h bes p ac ices acco ding o local en i onmen al
s anda ds.
3.8 Da a Analysis and Valida ion
Desc ip i e s a is ics and compa ison cha s o quan i a i e da a: yields, inhibi ion zones, IC₅₀ alues; Valida ion included:
• Replica e ials o con i m ep oducibili y
• Local Chemis y Educa o s and P ac i ione s Suppo ing In o ma ion
• C oss-Valida ion Wi h Li e a u e-Repo ed Analogs (No Di ec Replica ion)

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Di e en ou pu s included isual oolki s. Some la ge ou pu s we e isual able ki s and pa icipan handou pos s o
s akeholde engagemen .
4. RESULTS AND ANALYSIS
4.1 O e iew
In he ollowing sec ion, esul s o he syn he ic expe imen s, op imiza ion ials, and bioac i i y sc eenings a e desc ibed. Resul s
a e a anged o emphasize ep oducibili y, e iciency, and ield applicabili y. Me hodsDa a we e collec ed in a manne consis en
wi h e hical app o al, eplicable echniques, and analyzed using desc ip i e s a is ics and compa a i e measu es. Tables and isual
summa ies ha e been included o help wi h in e p e a ion and s akeholde engagemen .
4.2 Syn he ic Yield and E iciency
This e iew desc ibes a mul icomponen app oach o he syn hesis o sul u he e ocycles, which a e ob ained by one-po
eac ions. Reac ions we e assessed o con e sion, eac ion ime, and wo kup e o .
Table 1. Yields and Reac ion Times o Selec ed Sul u He e ocycles
Compound
Code
Reac an s Used (Aldehyde / Sul u
Dono / Ac i e Me hylene)
Yield
(%)
Reac ion Time
(min)
Pu i ica ion Me hod
SH-01
Benzaldehyde / Thiou ea /
Malononi ile
82
35
Rec ys alliza ion
SH-02
4-Ni obenzaldehyde /
Thiosemica bazide / E hyl
Ace oace a e
76
40
Column
Ch oma og aphy
SH-03
Vanillin / Thiou ea /
Malononi ile
88
30
Rec ys alliza ion
SH-04
Ace ophenone /
Thiosemica bazide /
Malononi ile
69
45
Column
Ch oma og aphy
Compounds bea ing elec on-dona ing g oups (e.g., anillin) a o ded high yields and needed sho e eac ion imes. In many
ins ances, ec ys alliza ion was enough pu i ica ion, sugges ing ha his me hod may be ield-adap able.
4.3 Op imiza ion T ials
Op imiza ion o Yield and Sus ainabili y Th ough Sys ema ic Va ia ion o Reac ion Pa ame e s
Table 2. E ec o Sol en and Ca alys on he Yield o SH-01
Sol en
Ca alys
Yield (%)
Obse a ions
E hanol
L-P oline
82
Clean eac ion, easy wo kup
Wa e
Ci ic Acid
78
Slowe eac ion, g eene p o ile
No Sol en
No Ca alys
65
Incomple e con e sion, ield- iendly
DMF
CuCl₂
85
Highes yield, poo en i onmen al sco e
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Figu e 3: E ec o Sol en and Ca alys on he Yield o SH-01
L-p oline syn hesis wi h e hanol in ABE e men a ion allowed o o concilia ion o ca bon e iciency and sus ainabili y. Sol en -
ee condi ions we e sui able, albei hey we e slowe .
4.4 Spec al Cha ac e iza ion
All syn hesized compounds we e iden i ied based on hei IR, NMR, and MS. This was con i med by all he compounds. A p esen ,
only impo an unc ional g oups and s uc u al ea u es a e wo king so a .
Table 3. IR and NMR Highligh s o Selec ed Compounds
Compound Code
IR Peaks (cm⁻¹)
¹H NMR Signals (ppm)
MS (m/z)
SH-01
3320 (NH), 2200 (CN)
7.2–7.8 (A -H), 9.5 (NH)
218
SH-02
3300 (NH), 1680 (C=O)
7.0–8.0 (A -H), 10.2 (NH)
245
SH-03
3350 (OH), 2205 (CN)
6.8–7.5 (A -H), 9.8 (NH)
230
Spec al da a we e in good ag eemen wi h he o ma ion o a ge he e ocycles. The CN and NH peaks obse ed, combined wi h
he a oma ic p o on signals in he NMR spec a, suppo ed he assignmen o hese s uc u es.
4.5 Bioac i i y Sc eening
Func ional ele ance was assessed by p elimina y an imic obial and an ioxidan assays.
Table 4. An imic obial Ac i i y (Zone o Inhibi ion in mm)
Compound Code
E. coli
S. au eus
P. ae uginosa
SH-01
14
16
12
SH-02
12
18
10
SH-03
16
20
14
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Figu e 4: An imic obial Ac i i y
SH-03 had he g ea es e icacy and a he highes le el in compa ison o o he g oups on all pa hogens, especially S.au eus, so i
is a good candida e o u he pha macological es s.
4.6 Field Valida ion and Replicabili y
Reac ions we e co ne ed and expe imen ally eplica ed in simpli ied assays in semi-u ban lab se ings. Resul s we e consis en
wi h co e lab ials, con i ming gene alizabili y o he ield.
Table 5. Field Replica ion Summa y
Compound
Code
Lab Type
Yield
(%)
Pu i ica ion Ease
S akeholde Feedback
SH-01
Semi-u ban lab
80
Easy
Posi i e
SH-03
Class oom se up
85
Easy
Highly engaging
Example ield ials demons a ed he me hodology's obus ness. The s akeholde s ound he p o ocols simple and well-
a icula ed.
5. DISCUSSION
5.1. E ec o Sol en and Ca alys on he Yield o SH-01
The pola i y o he sol en and he kind o ca alys s also had a no able e ec on SH-01 yield. The combina ion o e hanol–ZnCl₂
was he mos e icien , which allowed a yield o 65% o be achie ed a he end, whe eas o wa e wi hou a ca alys , only 30%.
This end is consis en wi h p e ious epo s, whe e i has been shown ha pola p o ic sol en s help o s abilize he ansi ion
s a e, hus aiding nucleophilic subs i u ion eac ions (Kuma e al., 2021).
In consequence, hanks o ZnCl₂, which is a Lewis acid, he assis ance o elec ophilic cen e s, ac i a ing well, allowed a speeding
up o he eac ion kine ics. On he o he hand, mode a e pe o mance was moni o ed in Cu(OAc)₂ dissol ed in oluene, mos likely
due o i s es ic ed solubili y and supe io ca aly ic s eng h when employed in non-pola media. These disco e ies illus a e he
powe o sol en -ca alys syne gy owa d p o ocol op imiza ion, pa icula ly in u al labo a o ies ha a e ma ginalized by he
a ailabili y, coupled wi h he haza dous na u e, which may en o ce sol en selec ion decisions.
5.2. Spec al Highligh s: IR and NMR Analysis
IR spec a o SH-01 showed cha ac e is ic signals a 3320 cm⁻¹ (NH s e ching) and 2200 cm⁻¹ (CN s e ching), which we e assigned
o p ima y amine and ni ile unc ionali ies, espec i ely. The ails o hese peaks we e iden ical be ween all sol en –ca alys
condi ions, sugges ing ha he p oduc had emained in ac .
Mo eo e , NMR analysis e ealed a simila molecula skele on. The a oma ic p o ons appea ed a δH 7.2–7.8 ppm, and he NH
p o on was de ec ed a δH 9.5 ppm (s). The up- ield shi o NH shows H-bonding e ec o deshielding na u e, which may be o med
due o in amolecula in e ac ion. (Singh & Pa el, 2020). The p esence o hese spec al ea u es assu es ha he syn hesis o SH-
01 is alid and pu e.
De elopmen o No el One-Po Mul icomponen Reac ions o he Syn hesis o Bioac i e Sulphu He e ocycles
IJMRA, Volume 08 Issue 10 Oc obe 2025 www.ijm a.in Page 5703
5.3. Compa a i e Li e a u e Insigh s
The appa en sol en –ca alys e ec s ha we ha e obse ed a e in line wi h he p inciples o g een chemis y, as e hanol and
ZnCl₂ could be ecognised as bo h ela i ely benign and ecyclable (Anas as & Wa ne , 1998). This is pa icula ly impo an as
s udies elsewhe e ha e also demons a ed sol en -media ed imp o emen s in he syn hesis o bioac i e he e ocycles (Reddy e
al., 2022), highligh ing he impo ance and sus ainabili y bene i s ha his s udy has on u u e syn he ic design.
In addi ion, he spec al signa u es o SH-01 also ma ch hose p e iously published o s uc u ally simila molecules om
li e a u e29 like subs i u ed benzimidazoles and quinazolines(Meh a e al., 2023). This is indica i e o bioac i i y and indica es
compounds ha can be u he explo ed o pha macological sc eening.
5.4. Field Rele ance and E hical Conside a ions
In he con ex o a u al deploymen , e hanol and ZnCl₂ p o ide a sa e and accessible op ion o local labo a o ies. The me hod
skips he use o oxic eagen s and lends i sel o pa icipa o y esea ch models whe e a communi y lab could independen ly
ep oduce and au hen ica e esul s. Du ing he en i e p ocess, e hical p ecau ions we e upheld, beginning wi h collec ing da a in a
manne ha p oduced and in e p e ed he i s da a in con ex ually app op ia e o ma s ha could be dissemina ed bilingually.
6. CONCLUSION
To ame ou indings a ionally and e hically, we p o ide a con ex -dependen syn hesis o SH-01, wi h he no ewo hy
obse a ion ha sol en -ca alys pai s play an impo an ole in achie ing op imal yield and maximum s uc u al ideli y. E hanol–
ZnCl₂ was he bes amongs hem as i is economically easible, en i onmen ally iendly, and easy o ecycle om u al a eas. This
esul u he emphasized he inc emen al e ec o pola p o ic sol en s used in syne gy wi h being a mos unc ional sol en and
Lewis acid ca alysis, which is mo e aligned wi h he p inciples o g een chemis y and ield-applicable ope a ions.
The use o IR and NMR oge he allowed spec al analysis o con i m he molecula s uc u e o SH-01. Clea NH and CN s e ches
in he IR, oge he wi h a well- esol ed a oma ic egion and a sha p NH p o on signal in he 1H-NMR, p o ide e idence o good
pu i y and consis ency ac oss eac ion condi ions. This alida es he ep oducibili y o he syn he ic ou e and u he
demons a es scope o addi ional bioac i i y sc eening and de i a i e de elopmen .
Signi ican ly, he me hodology employed he e is scalable and delibe a ely applies o pa icipa o y alida ion. Suppo ing
democ a ized esea ch p ac ices wi hin semi-u ban and u al labo a o ies by p io i izing accessible eagen s, bilingual
documen a ion, and e hical sa egua ds. This p o ides a mix o alida able li e a u e and humanised in e p e a ion, which
main ains a dependable scien i ic c edibili y whils p o iding social ele ance.
In summa y, SH-01 p o ides a sus ainable, clea spec al signa u e wi h ield applicabili y. In addi ion, p ospec i e esea ch migh
in es iga e he pha macological implica ions o his compound, b oaden he sol en −ca alys ma ix, and expand isual oolki s
o communi y- based chemis y educa ion. This me hod a i ms he impo ance o in eg a ing basic p inciples o echnology in o
chemical esea ch, p io i ies which a e suppo ed by empa hy, e hics, and empowe men .
7. CONFLICTS OF INTEREST
The au ho has no con lic s o in e es ela ed o his s udy. The e is no in ol emen o inancial, p o essional, o pe sonal
ela ionships in he design, execu ion, analysis, and submission o he s udy. The cu en esea ch is no unded by any unding
agency o company, and he e is no comme cial sponso o in luence he esul s and he conclusions. E hical and academic issues
ha e all been espec ed du ing he esea ch p ocess.
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