Selective catalytic conversion of cyanohydrins to their correspo

Details Selective catalytic conversion of cyanohydrins to their correspo Selective catalytic conversion of cyanohydrins to their correspo

1989-04-27

1990-11-13

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

536 179, 536 172, 536 22, 536 552, 536 553, 502102, C07H 100, C07H 500, C07C25500

Patent

active

049703021

ABSTRACT:
There is described a method of selectively and continuously converting a cyanohydrin to its corresponding aldehyde using as a catalyst zerovalent palladium dispersed on an organic polymeric resin with a surface area above 30 m.sup.2 /g under highly acidic conditions where the formed imine is resistant to further reduction to the amine. Where the aqueous cyanohydrin feedstock contains more than 1.4 equivalent proportions of a strong acid, less than 5% of the theoretical yield of amine is formed. Hydrogenation may be performed at a pressure as great as 2000 psig without significant deleterious effects on selectivity. Hydrolysis of the hydrogenation product affords the corresponding aldehydes in good yields.

REFERENCES:
patent: 4581447 (1986-04-01), Arena
patent: 4717696 (1988-01-01), Arena
H. S. Isbell and H. L. Frush, J. Org. Chem., 23, 1309 (1958).

Affiliated with

Also associated with

Rating

Selective catalytic conversion of cyanohydrins to their correspo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Selective catalytic conversion of cyanohydrins to their correspo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Selective catalytic conversion of cyanohydrins to their correspo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-777786