Cyclization of α- and β-(arylseleno)alkylcarboxylic acids and their derivatives

Abstract

The cyclization of α- and β-(arylseleno)alkylcarboxylic acids in polyphosphoric acid was studied. It was found that α-(arylseleno)alkylcarboxylic acids do not cyclize under those conditions in which cyclization of the analogous β-(arylseleno)alkylcarboxylic acids does occur. A convenient method for the preparation of 2-methylselenonapthanone by the cyclization of α-phenylselenopropionyl chloride is proposed. © 1973 Consultants Bureau, a division of Plenum Publishing Corporation.