Pyrrole studies.
作者:Werner Hinz、R. Alan Jones、Sunil U. Patel、(in part) Mary-Helen Karatza
DOI:10.1016/s0040-4020(01)87527-x
日期:1986.1
Nucleophilic addition to but-1-en-3-one by the acyl anion equivalent of 2-formylpyrroles, generated by reaction with thiazolium salts, yields 1-(2-pyrrolyl)pent-1,4-diones, which undergo the Paal-Knorr reaction with ammonia and primary amines to give the 2,2'-bipyrroles. Alternatively, the 2,2'-bipyrrole system can be obtained by pyrolysis of 2-azido-5-(2-pyrrolyl)penta-2,4-dienoic esters.
与噻唑鎓盐反应生成的2-甲酰基吡咯的酰基阴离子当量,对but-1-en-3-one进行亲核加成,生成1-(2-吡咯基)pent-1,4-二酮,并经Paal-与氨和伯胺的克诺尔反应,得到2,2'-联吡咯。或者,可以通过2-叠氮基-5-(2-吡咯基)戊-2,4-二烯酸酯的热解获得2,2′-联吡咯系统。