A Convenient Synthesis of 1,2,5-Trisubstituted 4,5-Dihydroimidazoles and 1,3-Diazaspiro [4.4(5)]alk-2-enes from<i>N</i>-Alkylideneanilines
作者:S. Shawkat Naim、Satyavan Sharma
DOI:10.1055/s-1992-26194
日期:——
A convenient synthesis of 5-aryl-4,5-dihydro-2-methoxycarbonylamino-1-phenylimidazoles 5a-d and 2-methoxycarbonylamino-1-phenyl-1, 3-diazaspiro[4.4(5)]alk-2-enes 5e,f has been reported from N-alkylideneanilines 1a-f via cyclization of the corresponding 1,2-bis(methoxycarbonyl)-3-(2-anilinoalkyl)guanidines 4a-f.
已报告一种方便的合成方法,通过环化相应的1,2-双(甲氧基羧基)-3-(2-亚氨基烷基)脲基化合物4a-f,从N-烯基苯胺1a-f合成5-芳基-4,5-二氢-2-甲氧基羧基氨基-1-苯基咪唑类化合物5a-d和2-甲氧基羧基氨基-1-苯基-1,3-二氮杂螺[4.4(5)]烯类化合物5e,f。