An Improved Approach tomeso-Substituted 1,9-Dicyanodipyrrolylmethanes
摘要:
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.