There is disclosed a process of producing an N-alkylacetamide of the general formula (III):
wherein X1, X2 and X3 are the same or different and are independently hydrogen, lower alkyl, lower alkoxy, lower alkenyl, halogen or trifluoromethyl; R1 and R2 are the same or different and are independently lower alkyl; and represents a chemical bond of E- or Z-configuration, or a mixture of these configurations, which includes the steps of:
(a) reacting an acetonitrile of the general formula (I):
wherein X1, X2, X3, R1 and are each as defined above, with an alkylamine of the general formula (IV):
wherein R2 is as defined above, to give an N-alkylacetamidine of the general formula (II):
wherein X1, X2, X3, R1, R2 and are each as defined above; and
(b) reacting the N-alkylacetamidine (II) with a nitrite derivative in the presence of an acid.
本发明公开了一种通式(III)的 N-烷基乙酰胺的生产工艺:
其中 X1、X2 和 X3 相同或不同,且独立地为氢、低级烷基、低级烷氧基、低级烯基、卤素或三
氟甲基;R1 和 R2 相同或不同,且独立地为低级烷基;代表 E- 或 Z-构型的
化学键,或这些构型的混合物,该工艺包括以下步骤:
(a) 使通式(I)的
乙腈反应:
其中 X1、X2、X3、R1 和各如上定义,与通式(IV)的烷基胺反应:
其中 R2 如上定义,得到通式(II)的 N-烷基
乙脒:
其中 X1、X2、X3、R1、R2 和各如上所定义;以及
(b) 在酸存在下,使 N-烷基
乙脒(II)与
亚硝酸盐衍
生物反应。