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Part-IResults and DiscussionCompd.No.AYield(%)M. P ( o C) Mol. formula(Solv. of crystn.)IR (cm -1 )Mass(m/e)NMR (δppm)IIxi73 278-280 C 10 H 9 ClN 2 OS(T-M)3015(γ CH2 ), 1678(γ CONH ),754(γ C-Cl )--2.46 (2H, m, CH 2 at 6, J = 7.0), 2.94 (4H, m, CH 2at 5 & 7), 4.50 (2H, s, CH 2, at 2), 12.56 (1H, s, br,NH)IIxiiS84 188-190 C 12 H 13 ClN 2 OS(M-C)2924(γ C-H ), 1670(γ CONH ),1471(γ C-H ), 736, 752 (γ C-Cl )-- --SIIxiii 70 257-259 C 9 H 7 ClN 2 O(E-C)1699(γ CONH ) -- --IIxiv58 273-275 C 12 H 10 Cl N 3 OS(E-C)3443, 3338 (γ NH ), 2946(γ C-H), 1672(γ CONH ), 760(γ C-Cl )281(M+1),279(M + ),244, 216--IIxvNNSN50 240-243 C 11 H 7 Cl N 4 O 2(E-C)2896(γ C-H ), 1686(γ CONH ),778(γ C-Cl )-- 4.62 (2H, s, CH 2 ), 7.22-8.35 (4H, m, Ar-H), 9.62(1H, s, NH)IIxviOO87 240-242 C 11 H 11 ClN 2 O 3(E-C)3012 (γ C-H ), 1666 (γ CONH ),780 (γ C-Cl )254(M + ),239, 219--IIxviiOS58 265-267 C 12 H 9 Cl N 2 O 2 S(E-C)2782(γ C-H ), 1670(γ CONH ),735 (γ C-Cl )-- --OIIxviiiSN74 275-277 C 13 H 11 Cl N 4 OS(E-C)2849(γ C-H ), 1676(γ CONH ),765(γ C-Cl )-- 2.50 (3H, s, CH 3 ), 4.35 (2H, s, CH 2 Cl), 7.12-7.91(5H, m, Ar-H)NE = Ethanol, C = Chloroform, D = Dimethylformamide, T = Toluene, M = Methanol,83