The present invention relates to a process for preparing C
4
-C
15
lactams, in which a C
1
-C
10
-alkyl nitrite is reacted with a C
4
-C
15
-cycloalkane and is illuminated with a light-emitting diode during the reaction. This forms a C
4
-C
15
-cyclohexanone oxime which is then converted further to a C
4
-C
15
lactam; the C
1
-C
10
alcohol formed is recycled into the preparation of the C
1
-C
10
-alkyl nitrite.
本发明涉及一种制备C4-C15内酰胺的方法,其中将C1-C10烷基
亚硝酸酯与C4-C15环
烷烃反应,并在反应过程中照射LED光。这样形成了C4-C15
环己酮肟,然后进一步转化为C4-C15内酰胺;生成的C1-
C10醇被回收再用于制备C1-C10烷基
亚硝酸酯。