Use of Montmorillonite clay for the synthesis of linear tetrapyrroles and their cyclization to Uroporphyrinogens
作者:Clotilde Pichon、A.Ian Scott
DOI:10.1016/s0040-4039(00)60710-4
日期:1994.6
Linear tetrapyrroles, such as the formylbilane (1), were obtained by condensation of alpha-hydroxymethyldipyrromethanes with alpha-free dipyrromethanes using Montmorillonite clay as acid catalyst. After reduction of the formyl group, hydroxymethylbilanes were cyclized to Uroporphyrinogens in presence of the clay.