N-Phenyl-N'-cyano-O-phenylisoureas are prepared from N-cyanodiphenoxyimidocarbonate and an optionally substituted o-phenylenediamine or o-aminophenol. The isoureas are new chemical intermediates especially useful for preparing 2-cyanamido and 2-carbomethoxyaminobenzimidazole and benzoxazole compounds having anthelmintic activity.
N-phenyl-N'-cyano-0-phenylisoureas and process for their preparation
申请人:SMITHKLINE BECKMAN CORPORATION
公开号:EP0034421A2
公开(公告)日:1981-08-26
N-Phenyl-N'-cyano-0-phenylisoureas are prepared from N-cyanodiphenoxyimidocarbonate and either a substituted o-phenylenediamine or a substituted o-aminophenol. The isoureas of the invention are of use as intermediates especially for preparing 2-cyanamido and 2-carbomethoxy- aminobenzimidazole and benzoxazole compounds having antheimintic activity.