Process for the preparation of nitriles from formamides

Details Process for the preparation of nitriles from formamides Process for the preparation of nitriles from formamides

A - Human Necessities

01

N

260/558.5, 260/5

A01N 43/64 (2006.01)

Patent

CA 1175064

ABSTRACT OF THE DISCLOSURE Aliphatic, araliphatic or aromatic nitriles of the formula R-CN are obtained by reacting N-substituted formamides of the formula R-NHCHO with at least the stoichiometric quantity of an acylating agent (generally a carboxylic acid anhydride, such as acetic anhydride, or ketone) in the gas phase at temperature above 250°C, without using a catalyst. The process is especially useful in the preparation of nitriles wherein the connecting carbon of R is a tertiary carbon atom. The nitriles are important intermediate products, for example for the preparation of herbicides, surface-active agents and anti-corrosive agents.

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