| 摘要 |
<p>A class of 4-piperidinones and corresponding dihydropyridinones having a phenyl substituent at one .beta.position, an alkyl, alkenyl or propargyl group at the 1position and an optional substituent at the other .beta.-position are broad-spectrum herbicides. The compounds bear a metasubstituent on the phenyl ring, and are particularly suited for use as herbicides in cotton culture. The novel compounds are prepared by reducing the corresponding 4(1H)pyridinones.</p> |
