Rational Syntheses of Porphyrins Bearing up to Four Different Meso Substituents
作者:Polisetti Dharma Rao、Savithri Dhanalekshmi、Benjamin J. Littler、Jonathan S. Lindsey
DOI:10.1021/jo000882k
日期:2000.11.1
using EtMgBr and an acid chloride has been refined. A new procedure for the preparation of unsymmetrical diacyl dipyrromethanes has been developed that involves (1) monoacylation with EtMgBr and a pyridyl benzothioate followed by (2) introduction of the second acyl unit upon reaction with EtMgBr and an acid chloride. The scope of these acylation methods has been examined by preparing multigram quantities