DERIVATIVES OF 4- (2- ARYLVINIL)- 6, 6- DIMETHYL- 3- CYANO- 5, 6- DIHYDRO- 2(1H)- PIRIDONY, METHOD FOR THETR PREPARATION AND APPLICATION

摘要

The compounds are applied as herbicides in agriculture. They have the following common formula:IMAGE,where X stands for hydrogen, low alkyl, low alcoxy, dimethylamine, ciano- or nitrogen group, tiophen or halogen. The method allows condensation of 4,6,6-trimethyl-3-ciano-5,6-dihydro-2(1H)-pyridon with aromatic aldehydes with a formula X-C6H4CHO, in which X has the abovementioned meaning, in a solution of chloroform, in the presence of piperidin, at boiling and aseotropic distillation of water.