A process for preparing N-alkenyl-amides by reacting the corresponding NH-amides with acetylenes in the liquid phase in the presence of basic alkali metal compounds and of a cocatalyst comprises using as the cocatalyst compounds of the general formulae (Ia) and/or (Ib)
R
1
O—(CH
2
CH
2
CH
2
CH
2
O)
n
—H (Ia):
R
1
O—(CH
2
CH
2
CH
2
CH
2
O)
n
—R
2
, (Ib):
where n is 1, 2 or 3 and R
1
and R
2
are independently C
1
- to C
6
-alkyl or C
2
- to C
6
-alkenyl, or together a butenyl unit.
制备N-烯基酰胺的过程包括通过在液相中让相应的NH-酰胺与
炔烃反应,在碱性
金属化合物和共催化剂的存在下,作为共催化剂使用的是具有以下通式(Ia)和/或(Ib)的化合物:R1O—(CH2CH2CH2CH2O)n—H (Ia):R1O—(CH2CH2CH2CH2O)n—R2, (Ib):其中n为1、2或3,R1和R2独立地为C1至C6烷基或C2至C6烯基,或者共同构成一个
丁烯基团。