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Part-IIResults and DiscussionS. No. R Time ofMWIHeating(Min)VIxviiiYield(%)M.P.Mol. formula(Solv. of crystn.)IR (cm -1 )(KBr)-CH 3 3 65 97-99 C 14 H 11 ClN 2 S 1553(γ C-C ),791(γ C-Cl )Mass (m/e)NMR (δppm)(CDCl 3 )-- 2.47 (3H, s, CH 3 ), 4.82(2H, s, CH 2 at 2), 7.18-7.50 (5H, m, 4-Ar-Hand 1H at 6)VIxixS-CH 3 4 90 102-104 C 9 H 9 ClN 2 S 1560(γ C-C ),841(γ C-Cl )-- --VIxxS-CH 3 6 90 235-237 C 13 H 9 ClN 2 S 2932(γ C-H ),1510(γ C-C ),818(γ C-Cl )-- --VIxxiVIxxiiOOSS-CH 3 4 90 280-282 C 11 H 11 ClN 2 O 2 S 1718(γ C-O ),1534(γ C-C )-CH 3 5 90 157-159 C 11 H 11 ClN 2 S 2939(γ C-H ),1413(γ C=C )-- 2.43 (3H, t,CH 3 CH 2 COO, J = 6.9& 7.1), 3.05 (3H, s,CH 3 at 5), 4.35 (2H, q,CH 3 CH 2 COO, J = 6.9,7.2), 4.82 (2H, s, CH 2at 2)-- --S337