[CH2:1]([C:8]1[CH:9]=[C:10]([CH:12]=[CH:13][CH:14]=1)[NH2:11])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:15](N1C=CN=C1)([N:17]1C=CN=C1)=[S:16].N>ClCCl.CO.C(OC(=O)C)C>[CH2:1]([C:8]1[CH:9]=[C:10]([NH:11][C:15]([NH2:17])=[S:16])[CH:12]=[CH:13][CH:14]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1A solution of 3-benzylaniline (183 mg, 1 mmol) and 1,1′-thiocarbonyldiimidazole (197 mg, 1.1 mmol) in dichloromethane (5 ml) is stirred at room temperature for 1.5 hours. 2 M ammonia in methanol (2.5 ml) is added to the solution and the mixture is stirred at room temperature overnight. The solution is diluted with ethylacetate, and the organic layer is washed with 5% HCl, saturated NaHCO3, and brine, and dried (anhydrous Na2SO4). The crude product is recrystallized from ethylacetate and petroleum ether to give the desired product as a white powder. 1H NMR (300 Hz, CDCl3) δ 7.93 (br s, 1H, NH), 7.73-7.02 (m, 9H, Aryl H), 6.06 (br s, 2H, NH2), 3.98 (s, 2H, CH2). MS (APCI) m/z 243 [M+H]±.
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