作者:Arumugham Balakumar、Kannan Muthukumaran、Jonathan S. Lindsey
DOI:10.1021/jo049819b
日期:2004.7.1
Prior syntheses of porphyrins bearing meso-formyl groups have generally employed the Vilsmeier formylation of an acid-resistant copper or nickel porphyrin. A new approach for the synthesis of free base porphyrins bearing one or two (cis or trans) meso-formyl substituents entails the use of a dipyrromethane bearing an acetal group at the 5-position, a dipyrromethane-1-carbinol bearing an acetal group