Tetrahedron

Efficient and versatile single pot approach to dipyrromethanes and bis (heterocyclyl) methanes

K Singh, S Behal, MS Hundal

Index: Singh, Kamaljit; Behal, Sonia; Hundal, Maninder Singh Tetrahedron, 2005 , vol. 61, # 27 p. 6614 - 6622

Full Text: HTML

Citation Number: 25

Abstract

Dipyrromethanes have been synthesized using a variety of procedures. 12 For example, the 5-unsubstituted dipyrromethane, has been prepared in three steps from pyrrole. 12a 5-Aryldipyrromethanes have also been synthesized indirectly, requiring either the elimination of a protecting ester group from the pyrrole, 12b or through the formation of a Grignard reagent. 12c A number of other syntheses of dipyrromethanes are based on the direct condensation of carbonyl reagents with ...