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    • 88. 发明授权
    • Preparation of N-alkenyl carboxamides
    • N-烯基甲酰胺的制备
    • US5710331A
    • 1998-01-20
    • US548724
    • 1995-10-26
    • Marc HeiderThomas RuhlJochem Henkelmann
    • Marc HeiderThomas RuhlJochem Henkelmann
    • C07C231/04C07C231/08C07C233/02C07C233/03C07C233/58C07C233/65C07C233/05
    • C07C231/08
    • Preparation of N-alkenyl carboxamides of the general formula I ##STR1## in which the radicals R.sup.1 to R.sup.4 independently stand for hydrogen or for aliphatic, cycloaliphatic, or aromatic radicals, which optionally carry inert substituents, wherein an amide of the general formula II ##STR2## in which the radical R.sup.1 has the above meaning, and a carbonyl compound of the general formula III ##STR3## in which the radicals R.sup.2 to R.sup.4 have the above meanings, are caused to react in the presence of a base, said reaction being either a) carried out in the presence of a carboxylic acid derivative of the general formula IV ##STR4## in which the radical R.sup.5 stands for hydrogen or an alkyl or aryl group and X is a halogen, alkoxy, or carboxylalkyl radical, or b) continued in the presence of a carboxylic acid derivative of the formula IV, and the amide of the formula I is isolated.
    • 其中基团R 1至R 4独立地代表氢或用于任选地带有惰性取代基的脂族,脂环族或芳族基团的通式I(I)的N-烯基甲酰胺的制备,其中一般的酰胺 其中基团R 1具有上述含义的式II(II)和其中基团R 2至R 4具有上述含义的通式III(III)的羰基化合物进行反应 碱的存在,所述反应是a)在通式IV(IV)的羧酸衍生物存在下进行,其中基团R 5代表氢或烷基或芳基,X是 卤素,烷氧基或羧基烷基,或b)在式Ⅳ的羧酸衍生物存在下连续进行,分离式Ⅰ的酰胺。