Process for the preparation of N-vinyl lactams

Details Process for the preparation of N-vinyl lactams Process for the preparation of N-vinyl lactams

1988-03-28

1989-10-10

Springer, David B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548543, 548552, 540604, C07D207267, C07D21174, C07D22300

Patent

active

048733369

ABSTRACT:
The invention relates to the preparation of N-vinyl lactams having the formula ##STR1## wherein n is an integer having an value of from 1 to 3 in a one-stage, non-aqueous process which comprises reacting a lactam having the formula ##STR2## with acetylene under an acetylene partial pressure of from about 25 to about 125 psig. in the presence of an inert gas diluent and a catalyst having the formula ##STR3## wherein R.sub.1, R.sub.2 and R.sub.3 are all lower alkyl or alyl or one of R.sub.1, R.sub.2 and R.sub.3 can also be hydrogen and M is a metal selected from the group of cesium, potassium, sodium and lithium.

REFERENCES:
patent: 2317804 (1943-04-01), Reppe et al.
patent: 3249625 (1966-05-01), Bestian et al.

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