N- BENZYL- N- ALKYL CARBOXAMIDES AND METHOD FOR THEIR PREPARATION

摘要

The compounds are applied in agriculture. They have high herbicide activity. Their common formula is:<IMAGE>,where R1 stands for a methyl, ethyl or phenylethylene group; R2 is chlorinemethyl, phenyl benzyl or etoxygroup; R3 is hydrogen, nitrogroup, methyl group or halogen of at 2, 3 or 4th group. The method allows the interaction between low-tier butyric or butyricaromatic amines with aromatic aldehydes or acylhalogenides in the presence of sodium boronhydride.