Amidation of vinyl chloride with dimethylamine using a supported

Details Amidation of vinyl chloride with dimethylamine using a supported Amidation of vinyl chloride with dimethylamine using a supported

1992-09-23

1994-05-17

Hollrah, Glennon H.

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

Organic compounds

Amino nitrogen containing

564205, C07C23110

Patent

active

053129849

ABSTRACT:
A continuous process for making N,N-dimethylacrylamide (NNDMA) is disclosed which uses a commodity chemical, namely vinyl chloride (VCl), which is amidated with dimethylamine (DMA) and carbon monoxide in the presence of a supported palladium(O) triorganophosphine catalyst used under conditions where the ratio of P/Pd is critical. The continous process unexpectedly provides the catalyst with long life because the reaction can be carried out in a moving bed of catalyst in the presence of enough acetonitrile solvent to prevent deposition of DMA.HCl, formed during the reaction, in the pores of the catalyst support.

REFERENCES:
patent: 3988358 (1976-10-01), Heck
patent: 4128554 (1978-12-01), Heck
patent: 5159113 (1992-10-01), Nicholas
Komoroski et al, Inorganic Chemistry, 1986, 25, 3917-3925.

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