Ruthenium-Catalyzed Pyrrole Synthesis via Oxidative Annulation of Enamides and Alkynes
作者:Bin Li、Nuancheng Wang、Yujie Liang、Shansheng Xu、Baiquan Wang
DOI:10.1021/ol303159h
日期:2013.1.4
An efficient and regioselective ruthenium-catalyzedoxidative annulation of enamides with alkynes via the cleavage of C(sp2)–H/N–H bonds is reported. The reactions can afford N-acetyl substituted or N-unsubstituted pyrroles by altering the reaction conditions slightly.
An unusual dehalogenation in the Suzuki coupling of 4-bromopyrrole-2-carboxylates
作者:S HANDY、H BREGMAN、J LEWIS、X ZHANG、Y ZHANG
DOI:10.1016/s0040-4039(02)02615-1
日期:2003.1.13
An unusual dehalogenation of 4-bromopyrrole-2-carboxylates under Suzuki coupling conditions has been observed. This dehalogenation can be suppressed by protection of the pyrrole nitrogen. Using a BOC protecting group, not only is dehalogenation suppressed, but the protecting group is also removed under the reaction conditions. (C) 2002 Elsevier Science Ltd. All rights reserved.