One-Pot Quinazolin-4-yl-thiourea Synthesis via N-(2-Cyanophenyl) benzimidoyl isothiocyanate
作者:W. Fathalla、M. Čajan、J. Marek、P. Pazdera
DOI:10.3390/60700588
日期:——
1-substituted-3-(2-phenylquinazolin-4-yl) thioureas (7) were produced by an intramolecular cycloaddition reaction of 1-substitued-3-[(2-cyanophenylimino) phenylmethyl] thioureas (3). These compounds in turn were prepared by the reaction of N-(2-cyanophenyl)benzimidoyl isothiocyanate (2) with primary amines. The structures of products 7 were confirmed by FTIR, 1H-NMR, 13C-NMR, mass spectroscopy and X-ray crystallography.
1,1-Disubstituted-3-(2-phenyl-3H-quinazolin-4-ylidene)thioureas (8) were synthesized in a one pot reaction of N-(2-cyanophenyl)benzimidoyl isothicyanate (3) with secondary amines. The products underwent transamination reactions. Compounds 8a-8g were identified by FTIR, 1H-NMR, 13C-NMR, mass spectroscopy and X-ray crystallography.
通过 N-(2-氰基苯基)苯亚甲酰异硫氰酸酯 (3) 与仲胺的一锅反应,合成了 1,1-二取代-3-(2-苯基-3H-喹唑啉-4-亚基)硫脲类化合物 (8)。产物发生了转氨基反应。化合物 8a-8g 通过傅立叶变换红外光谱、1H-核磁共振、13C-核磁共振、质谱和 X 射线晶体学进行了鉴定。