Process for producing substituted pyrroles

Details Process for producing substituted pyrroles Process for producing substituted pyrroles

1982-12-08

1984-06-19

Raymond, Richard

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20716

Patent

active

044554338

ABSTRACT:
An acid having a dissociation constant of at least 1.3.times.10.sup.-5 at 25.degree. C. is used to enhance the yield of alkyl, 1,4-dialkyl-3-alkoxycarbonylpyrrole-2-acetate in the reaction of a chloromethyl alkyl ketone with a dialkyl acetone dicarboxylate and an alkylamine in a reaction medium comprising an organic solvent. The preferred acid is formic acid.

REFERENCES:
patent: 3752826 (1973-08-01), Carson
patent: 3865840 (1975-02-01), Carson
patent: 3952012 (1976-04-01), Carson
patent: 4383117 (1983-05-01), Kao et al.
patent: 4388468 (1983-06-01), Dagani
Fischer et al., Die Chemie des Pyrroles, Edward Brothers, Inc., Ann. Arbor, Michigan (1943), pp. 5, 6, 233 & 234.
Gowan et al., Name Index of Organic Reactions, Longmans, Green and Co., Ltd., New York (1960), p. 116.
Jones et al., The Chemistry of Pyrroles, Academic Press, Inc., New York (1977), pp. 59 & 104.
Krauch et al., Organic Name Reactions, John Wiley and Sons, Inc., New York (1964), p. 211.

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