| abstract |
NEW MATERIAL:The compound of formula I (R 1 is H, 1W8C alkyl; lower alkenyl, 5W7C cycloalkyl, etc.; R 2 is H, 1W8C alkyl, lower alkynyl, cyano-substituted lower alkyl, 5W7C cycloalkyl, aryl, etc.). n EXAMPLE: N-Trichloroacryloyl N'-phenylurea. n USE: An agricultural and horticultural fungicide exhibiting excellent activity against rice blast. It is effective also to alternaria leafspot of Chinese cabbage, anthracnose of cucumber, late blight of tomato, etc. n PREPARATION: The compound of formula I can be prepared by reacting trichloroacryloyl isocyanate of formula II with the amine of formula III in a solvent such as hexane, ether, etc. at -20°CW the boiling point of the mixture, preferably at 0W100°C. n COPYRIGHT: (C)1984,JPO&Japio |