| abstract |
NEW MATERIAL: A compd. represented by formula I [wherein Het is groups represented by formulae II-IV; R 1 is H or halogen; R 2 is halogen or X-R 9 (X is O or S; and R 9 is alkyl, alkenyl or alkynyl); R 3 is H or (halogeno)alkyl; R 4 and R 5 are each R 3 or halogen; R 6 and R 7 are each H (halogeno)alkyl, alkoxyalkyl, (halogeno)alkynyl or (substd.) cycloalkyl or the like; and R 8 is R 6 except alkoxyalkyl and (substd.) cycloalkyl]. n EXAMPLE: 4-(3,5-Dimethyl-1-pyrazoly)-2,5-difluorobenzonitrile. n USE: A herbicide and a plant growth regulator. n PROCESS: For example, 4-cyanophenylhydrazine represented by formula V is reacted with 1,3-diketone represented by formula VI [wherein R 4-1 and R 5-1 are each H (halogeno)alkyl] or its deriv. to obtain the corresponding compd. represented by formula I. n COPYRIGHT: (C)1990,JPO |