| 摘要 |
<p>The novel compounds of formula (I) wherein A represents an optionally substituted 5- or 6-membered heteroaromatic group or an optionally substituted aryl group or a difluorobenzodioxolyl group; B represents an optionally substituted cyclic hydrocarbon or thienyl, an alkyl, alkenyl or alkynyl group or independently has one of the meanings of A; n represents an integer from 0 to 2; R represents a hydrogen atom, a halogen atom, an optionally substituted alkyl, alkenyl, alkynyl, alkoxy, alkoxyalkyl, dialkoxyalkyl, alkoxyalkoxy, alkylthio, amino, alkylamino, dialkylamino or alkoxyamino group or a hydroxy, formamidino or cyano group; X1 and X2 independently represent an oxygen or sulphur atom, and the agronomically acceptable salts thereof; and the herbicidal use of these compounds.</p> |
