Method for the preparation of 2-(2-cyanoethyl)-cyclopentanones

Details Method for the preparation of 2-(2-cyanoethyl)-cyclopentanones Method for the preparation of 2-(2-cyanoethyl)-cyclopentanones

1993-03-30

1994-06-07

Brust, Joseph Paul

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

Organic compounds

Nitriles

C07C25330

Patent

active

053191250

ABSTRACT:
The invention relates to a method for the preparation of a 2-(2-cyanoethyl)-cyclopentanone by reaction of a cyclopentanone which contains at least one .alpha.-H atom with an .alpha.,.beta.-unsaturated nitrile in the presence of a catalytic amount of pyrrolidine as catalyst and optionally also a catalytic amount of an acid compound. A high selectivity and a high catalyst activity are achieved with the method.

REFERENCES:
patent: 4267362 (1981-05-01), Meyer et al.
Chemical Abstracts, vol. 75, (1971) Abstract No. 19354p, "Monocyanoethylation of Ketones in the Presence of Primary Amine and Carboxylic Acid", Niehimura, et al.

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