A class of 4-piperidinones and corresponding dihydropyridinones having a phenyl substituent at one .beta.-position, an alkyl, alkenyl or propargyl group at the 1-position and an optional substituent at the other .beta.-position are broad-spectrum herbicides. The compounds bear a meta-substituent on the phenyl ring, and are particularly suited for use as herbicides in cotton culture.
一类
4-哌啶酮和相应的
二氢吡啶酮,在其中一个.beta.-位置上具有苯基取代基,在1-位置上具有烷基、烯基或
丙炔基基团,并在另一个.beta.-位置上具有可选的取代基,是广谱
除草剂。化合物在苯环上带有一个间位取代基,特别适用于棉花种植中作为
除草剂。