“…Thus when -toluenesulfonyl azide is thermally decomposed in aniline or dimethylaniline, some sulfur dioxide and nitrogen are evolved and 4,4'-diaminotriphenylmethane or 4,4'-bis(dimethylamino)triphenylmethane is formed (97). The diphenylmethylene radical, (C6H5)2C:, from diazodiphenylmethane, does not attack benzene (354) and takes hydrogen from the side chain of benzyl methyl ether (28), but with phenol it gives small amounts (2 to 3 per cent) of o-(diphenylmethyl)phenol (61,356). The ethoxycarbonylmethylene radical, C2H5OCOCH:, derived from ethyl diazoacetate, is well known to add to a benzene ring and yield a bicyclo compound containing a cyclopropane ring.…”