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Part-IResults and DiscussionTable 7: Physical data of other o-aminoesters (Ixiii-xvii) synthesizedCompdNo.IxiiiIxivIxvIxviIxviiH 3 CH 3COH 3 COCompound M.P ( o C) Yield(%)Mol. Formula(Solv. ofCrystn.)NSCHCOOC 2 H 512 14 2 2(E)N COOC 2 H 5ONNH 2COOCH 3NH 2137-138 44 C 11 H 11 N 3 O 3(E)120-122 47 C 11 H 15 NO 4(E)S140-143 80 C 11 H 11 NO 3 SCOOC 2 H 5 (E)NHOCH 23SNNCONH 2 146-150 56 C 11 H 12 N 4 OS(E)NH 2IR (cm -1 ) Mass (m/e) NMR (δppm)3435,3332(γ NH ),2979(γ C-H ),1668(γ C=O )3476,3334(γ NH ),2998(γ C-H ),1739(γ C=O ),1687(γ CONH )3476,3373(γ NH ),2998(γ C-H ),1739(γ C=O ).3484,3376(γ NH ),2947(γ C-H ),1670(γ C=O )3449,3394(γ NH ),3138(γ C-H ),1662(γ CONH )250(M + ), 222,204, 176, 149,132218(M + ), 204,161, 144, 218,204, 161, 1441.38 (3H, t, COOCH 2 CH 3 , J= 5.1 & 6.9), 2.57 (3H, s,CH 3 ), 2.71 (3H, s, CH 3 ),4.32 (2H, q, COOCH 2 CH 3 ,J = 6.9 & 7.2), 6.14 (2H, s,NH 2 ), 6.82 (1H, s, Ar-H)1.45 (3H, t, COOCH 2 CH 3 , J= 7.2), 4.50 (2H, q,COOCH 2 CH 3 , J = 6.9 &7.2), 5.15 (2H, s, br, NH 2 ),7.48-8.29 (4H, m, Ar-H)-- ---- --248(M + ), 231,216, 198, 186,157--E= Ethanol77