Selective conversion of acrylonitrile into 1,4-dicyano-1-butene

Details Selective conversion of acrylonitrile into 1,4-dicyano-1-butene Selective conversion of acrylonitrile into 1,4-dicyano-1-butene

1985-06-28

1987-04-28

Brust, Joseph Paul

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

Organic compounds

Nitriles

C07C12000, C07C12130

Patent

active

046616152

ABSTRACT:
Selective conversion of acrylonitrile into 1,4-dicyano-1-butene by contacting a liquid phase comprising acrylonitrile with an effective amount of a polymer-bound alkyl diarylphosphinite catalyst having the formula I: ##STR1## wherein the trivalent phosphorus is substituted by one alkoxy group and one aryl group and wherein the third bond of phosphorus is a P--C bond to a pendant aryl group of the polymer matrix, such as polystyrene cross-linked with divinylbenzene is disclosed. Treatment of the liquid phase, prior to contacting same with the polymer-bound catalyst, with a drying agent comprising a polymer-bound dialkyl arylphosphonite and regeneration of the drying agent are also disclosed.

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