Synthesis of bis(pyrrol-2-yl)arenes by Pd-catalyzed cross coupling
作者:Jun-ichiro Setsune、Masayuki Toda、Keigo Watanabe、Pradeepta K. Panda、Takafumi Yoshida
DOI:10.1016/j.tetlet.2006.08.098
日期:2006.10
2-Borylpyrrole was prepared from 2-iodopyrrole almost quantitatively and then reacted with dihaloarenes under typical reaction conditions of Suzuki-Miyaura cross coupling to give bis(pyrrol-2-yl)arenes in good yields, while the cross coupling reaction of 2-iodopyrrole with 1,4-phenylenebisboronic acid was susceptible to oxidative self-coupling to produce 4,4'-bis(pyrrol-2-yl)biphenyl as a byproduct. These bis(pyrrol-2-yl)arenes showed strong fluorescence. (c) 2006 Elsevier Ltd. All rights reserved.