Efficient Synthesis of Monoacyl Dipyrromethanes and Their Use in the Preparation of Sterically Unhindered <i>trans</i>-Porphyrins
作者:Polisetti Dharma Rao、Benjamin J. Littler、G. Richard Geier、Jonathan S. Lindsey
DOI:10.1021/jo9915473
日期:2000.2.1
the corresponding carbinol, and self-condensation of the carbinol to form the porphyrin. The monoacylation procedure has wide scope as demonstrated by the preparation of a set of 15 diverse monoacyl dipyrromethanes in good yield at the multigram scale. The dipyrromethanecarbinol self-condensation reaction is extremely rapid (<3 min) under mild room-temperature conditions and affords the trans-porphyrin