An Improved Approach to<i>meso</i>-Substituted 1,9-Dicyanodipyrrolylmethanes
作者:B. Movassagh、H. Khorsandpoor、J. Shahmoradi
DOI:10.1080/00397910008086913
日期:2000.9
A series of meso-substituted 1,9-dicyanodipyrrohylmethanes and phenylene-bridges bis-dipyrrolylmethanes containing one / and two phenyl bridges have been prepared from condensation of 2-cyano-3,4-dialkylpyrrole 1 with various aromatic aldehydes.
Improved Synthesis of Functionalized 2,2‘-Bipyrroles
作者:Lijuan Jiao、Erhong Hao、M. Graça H. Vicente、Kevin M. Smith
DOI:10.1021/jo701310k
日期:2007.10.1
A series of 2,2‘-bipyrroles has been efficiently synthesized using an improved synthetic approach based on Pd(0)-catalyzed homocoupling of various 2-iodopyrroles. This new synthetic approach takes place at room temperature and in the presence of water. Functional groups such as formyl, ester, and nitrile are able to survive these reaction conditions. Solvents are found to play an important role in