Research on heterocyclic compounds. XXI. Synthesis of imidazo[2,1-<i>b</i>]benzothiazole and imidazo[2,1-<i>b</i>]thiazole derivatives
作者:Enrico Abignente、Paolo De Caprariis、Giovanni De Martino、Rosaria Patscot
DOI:10.1002/jhet.5570240129
日期:1987.1
corresponding imidazo[2,1-b]benzothiazole and imidazo[2,1-b]-thiazole derivatives, respectively. In some cases, two unexpected side products were obtained together with the required compound and their structures were elucidated: e.g., 2-aminobenzothiazole reacted with ethyl 3-bromo-4-oxopentanoate to give ethyl 2-methylimidazo[2,1-b]benzothiazole-3-acetate together with ethyl imi-dazo[2,1-b]benzothiazole-2-propionate
研究了一些2-氨基苯并噻唑和2-氨基噻唑与3-溴-4-氧杂戊酸乙酯的反应,目的是得到相应的咪唑并[2,1- b ]苯并噻唑和咪唑并[2,1- b ]-噻唑衍生物, 分别。在某些情况下,获得了两种意外的副产物以及所需的化合物,并阐明了它们的结构:例如,2-氨基苯并噻唑与3-溴-4-氧戊酸乙酯反应生成乙基2-甲基咪唑并[2,1- b ]苯并噻唑-3-乙酸盐与咪唑基[ 2,1- b ]苯并噻唑-2-丙酸乙酯和3-(苯并噻唑-2-基)氨基-4-氧戊酸乙酯一起。