Preparation of pyrroles

Details Preparation of pyrroles Preparation of pyrroles

1984-03-09

1985-12-24

Brust, Joseph Paul

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548563, 548564, C07D207323, C07D29500

Patent

active

045607699

ABSTRACT:
Pyrroles are prepared by a process in which ammonia or an amine is reacted with a but-2-ene-1,4-diol in the presence of a supported catalyst containing copper, silver, zinc, palladium, nickel, cobalt and/or platinum and/or compounds of these metals as catalytic materials, and in the presence or absence of compounds of chromium and/or manganese as additional catalysts, in the gas phase.
The pyrroles obtainable by the process of the invention are useful starting materials for the preparation of dyes, corrosion inhibitors, drugs and pesticides.

REFERENCES:
patent: 2421650 (1947-06-01), Reppe et al.
patent: 2671789 (1954-03-01), Copes et al.
Ullmans Encycl. d. Techn. Chem., 19, (1980), pp. 639-642.
Murahashi et al.; J. C. S. Chem. Comm., (1974), pp. 931-932.

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