A method is provided for synthesizing acylamides, useful as protectant for cultivated plants. A benzoxazine, such as 3,4-dihydro-3-methyl-2H-1,4-benzoxazine, is made in a stepwise manner by initially forming an o-nitrophenoxyketone by reacting a haloketone and a nitrophenol. The o-nitrophenoxyketone is hydrogenated to form the corresponding benzoxazine, which is thereafter acylated with an acylhalide to produce the acylamide, such as 4-dichloroacetyl-3,4-dichloroacetyl-3,4-dihydro-3-methyl-2H-1,4-benzoxazine.
提供一种合成酰胺的方法,作为栽培植物的保护剂。通过首先将卤代酮和硝基
酚反应形成邻
硝基苯氧酮,然后将邻
硝基苯氧酮加氢形成相应的苯并噁嗪,随后用
酰卤酸酐对苯并噁嗪进行酰化,从而制备酰胺,例如4-二
氯乙酰基-3,4-二
氯乙酰基-3,4-二氢-3-甲基-2H-1,4-苯并噁嗪。