作者:Wei Tian、Spiros Grivas
DOI:10.1055/s-1992-26359
日期:——
Cyclocondensation of 3-nitro-1,2-benzenediamines 2 with 2,4-pentanedione provides a convenient route for the preparation of 2-methyl-4-nitrobenzimidazoles 3. A discrepancy in the literature regarding the 5-chloro-, 5-methoxy- and 5-methyl derivatives of the title compounds is discussed.
3-硝基-1,2-苯二胺2与2,4-戊二酮的环化缩合反应提供了一种制备2-甲基-4-硝基苯并咪唑3的简便方法。本文讨论了关于标题化合物的5-氯代、5-甲氧基和5-甲基衍生物的文献中存在的不一致性。