Substituted dipyrromethanes and their preparation

Details Substituted dipyrromethanes and their preparation Substituted dipyrromethanes and their preparation

1995-11-27

1996-07-16

McKane, Joseph K.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D207323

Patent

active

055368441

ABSTRACT:
New chemical compounds, bis(pyrrol-2-yl)halocarbylmethanes, also known as meso-halocarbyl dipyrromethanes, are made by recting pyrrole in either of two reaction schemes. Once such scheme converts pyrrole through an intermediate, a halocarbyl carbonyl pyrrole, to a [2-(1-hydroxyl-1-hydro-1-halocarbyl)pyrrole], and then converts the latter to the desired halocarbyldipyrromethane; the last step in this scheme is a novel and useful method in itself. The other such sequence converts pyrrole, by reaction with a halocarbyl aldehyde, directly to the desired halocarbyl dipyrromethane.

REFERENCES:
CA 121:108420t Syntheses . . . 1.1-di(pyrrolyl)ethenes. Xie et al., p. 1035, 1994.

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