Copper−Diamine-Catalyzed <i>N</i>-Arylation of Pyrroles, Pyrazoles, Indazoles, Imidazoles, and Triazoles
作者:Jon C. Antilla、Jeremy M. Baskin、Timothy E. Barder、Stephen L. Buchwald
DOI:10.1021/jo049658b
日期:2004.8.1
This paper details the copper-catalyzed N-arylation of π-excessive nitrogenheterocycles. The coupling of either aryl iodides or aryl bromides with common nitrogenheterocycles (pyrroles, pyrazoles, indazoles, imidazoles, and triazoles) was successfully performed in good yield with catalysts derived from diamine ligands and CuI. General conditions were found that tolerate functional groups such as
One-pot preparation of pyrrole derivatives via the copper-catalyzed [4+1] annulation of propargylic amines with ethyl glyoxylate and phenylglyoxal in the presence of piperidine
We describe how copper(II) chloride efficiently catalyzes the [4+1] annulation of propargylamines with either ethyl glyoxylate or phenylglyoxal functioning as a C1 unit, in the presence of piperidine, which leads to a straightforward and one-pot preparation of pyrrolederivatives. The key feature in this annulation is the in-situ generation of an N,O-hemiacetal intermediate from either the glyoxylate
Total Synthesis of (−)-Hanishin, (−)-Longamide B, and (−)-Longamide B Methyl Ester <i>via</i> a Novel Preparation of <i>N</i>-Substituted Pyrrole-2-Carboxylates
作者:Guolin Cheng、Xinyan Wang、Hailin Bao、Chuanjie Cheng、Nan Liu、Yuefei Hu
DOI:10.1021/ol300495m
日期:2012.4.6
Page 1062. The word “longamide” was mis-spelled as “longmide” in the title, throughout the paper, including text and graphics, as well as the Supporting Information file. This article has not yet been cited by other publications.