LETTER	Synlett 2006: 0490-0492   DOI: 10.1055/s-2006-932452
© Georg Thieme Verlag Stuttgart · New York
A New Approach to the Preparation of 1,3,4-Triarylpyrroles
De Xing Zeng, Yi Chen*
Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100101, P. R. of China Fax: +86(10)64879375; e-Mail: yichen@mail.ipc.ac.cn;
Received 16 November 2005

Abstract

A class of 1,3,4-triaryl-2,5-dihydropyrroles were synthesized using the McMurry coupling reaction as the key step. The non-catalytic photoconversion of 1,3,4-triaryl-2,5-dihydropyrroles furnished 1,3,4-triarylpyrroles in good yields (63-89%). It was found that the photoconversion was facile and very reliable; the ­solvent was found to play an important role.

Key words

1,3,4-triaryl-2,5-dihydropyrrole - 1,3,4-triarylpyrrole - photoconversion - McMurry reaction