| 摘要 |
1,220,908. Phenylhydrazones. FARBENFABRIKEN BAYER A.G. 9 Dec., 1969 [12 Dec., 1968], No. 60065/69. Heading C2C. [Also in Division A5] The invention comprises compounds of the formula where X is O or S; Y is alkyl, cycloalkyl, aryl, alkenyl, haloalkyl, haloaryl, alkoxy, cycloalkyloxy, aroxy, alkylmercapto, arylmercapto or dialkylamino, Z is alkyl, alkoxy or an electronegative substituent; n is 1-5, if n is more than 1 the radical Z may be the same or different. The compounds are prepared by reacting a compound of the formula with a compound of the formula where alk is Na or K. |
