P-Cyanobenzenesulfonamide, reduction

Cyanoanthracene, 50,55 p-Cyanobenzenesulfonamide, reduction with Raney nickel alloy to p-for-mylbenzenesulfonamide, 51,20 p-Cyano-N,N-diethylaniline, 50, S4 Cyanohydrins, formation by use of alkyl-aluminum cyanides, 52, 96... 

Cyanoanthracene, 50, 55 p-Cyanobenzenesulfonamide, reduction with Raney nickel alloy to p-formylbenzenesulfonamide, 51, 20... 

Stephen reduction of an aromatic nitrile to the aldehyde.1 A 2-1. two-necked, round-bottomed flask fitted with a mechanical stirrer and a reflux condenser is charged with 40 g. of p-cyanobenzenesulfonamide, 600 ml. of 75% (v/v) formic acid, and 40 g. of... 

Formylbenzenesulfonamide has been prepared by chromic acid oxidation of -toluenesulfonamide, the Sommelet reaction on p-chloromethylbenzenesulfonamide, and by the Stephen reduction of j -cyanobenzenesulfonamide. The present method provides a general procedure for the synthesis of substituted aromatic aldehydes as illustrated in Table I. 

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