Formamide → p-Cyanobenzamide

Participants

Reaction Conditions

Reaction Steps

0.127 g of bis(tricyclohexylphosphine)-palladium, 2.377 g of 4-chlorobenzonitrile, 3.12 g of formamide, 2.82 g of 4-pyrrolidinopyridine and 20 ml of 1-methyl-2-pyrrolidinone are placed in a 200 ml glass autoclave. The autoclave is closed, flushed with nitrogen three times and then 5 bars carbon monoxide are applied. The reaction mixture is heated to 120° C. and stirred for 18 hours. It is then cooled, the white precipitate is filtered and mixed with ethyl acetate and water, and extracted. The aqueous phase is extracted by shaking 3 times with ethyl acetate, and afterwards the organic phases are collected, dried over magnesium sulphate and concentrated. The oil obtained is chromatographed over silica gel. The yield of title compound is 40% (part of the product remains in the water phase).

Provenance & Evidence