Pyrrole chemistry XXV: A simplified synthesis of some 3-substituted pyrroles
作者:Ru Xun Xu、Hugh J. Anderson、Niall J. Gogan、Charles E. Loader、Robert McDonald
DOI:10.1016/s0040-4039(01)92376-7
日期:1981.1
A new synthesis is reported which allows the rapid preparation in good yield of 3-aroyl-, 3-acetyl- and 3-nitro- pyrroles from pyrrole utilizing the 1-benzenesulfonyl group as a blocking group.
A study of the friedel-crafts acylation of 1-benzenesulfonyl-1<i>H</i>-pyrrole in the preparation of 3-aroylpyrroles
作者:Ioannis Nicolaou、Vassilis J. Demopoulos
DOI:10.1002/jhet.5570350619
日期:1998.11
In this work, we studied the aluminum chloride catalyzed reaction of 1-benzenesulfonyl-1H-pyrrole with a series of eleven aroyl chlorides. The products formed were not isolated, but hydrolyzed to the target 3-aroylpyrroles in overall yields, usually, higher than 50%. However, in the cases with the π electron rich 1-phenyl-1H-pyrrole-3-carbonyl chloride and 1-methyl-1H-indole-3-carbonyl chloride significant