anes, which were subjected, without isolation, to various cyclocondensation reactions with CS2, CO2, alkyl isocyanates, acyl chlorides, anhydrides, or esters. A simple, convenient, one-pot procedure provided derivatives of unsymmetrically substituted 1-alkylbenzimidazoles functionalized at C2 in good to excellent yields. The method does not require the use of metals, sensitive catalysts, or pressure
N-烷基-
2-硝基苯胺用
三丁基膦脱氧形成中间体 2-(烷基
氨基)芳基亚
氨基正膦,无需分离即可与 CS 2 、CO 2 、烷基进行各种环缩合反应
异氰酸酯、酰
氯、酸酐或酯。一种简单、方便的一锅法以良好至优异的产率提供了在 C2 官能化的不对称取代的 1-烷基
苯并咪唑的衍
生物。该方法不需要使用
金属、敏感催化剂或压力。