Process for the production of vinyl carbonyls

Details Process for the production of vinyl carbonyls Process for the production of vinyl carbonyls

1995-09-29

1997-06-10

Reamer, James H.

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

Organic compounds

Oxygen containing

568313, 568345, C07C 4545

Patent

active

056377746

ABSTRACT:
Disclosed is a very economical way to produce vinyl carbonyls such as ethyl vinyl ketone. Disclosed also is a purification process of separating vinyl carbonyls and coreactants. The catalyst and reaction conditions give useful yields of vinyl carbonyls, the thermodynamically unfavorable product along with coreactants that are more thermodynamically favored. Disclosed also is the separation of reactants that takes place at low distillation temperatures and pressures in the presence of antioxidant.

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F. F. Blicke; Organic Reactions, 1, 303 (1942); "The Mannich Reaction".
E. M. McMahon et al., Journal American Chemistry Society, 70, 2971 (1948), Preparation and Properties of Ethyl Vinyl Ketone and Methyl Isopropenyl Ketone.
R. B. Woodward, et a., Journal American Chemical Society, 74, 4223 (1952), The Total Synthesis of Steroids.
B. Byrne, et al. Synth., 870 (1986), A Convenient Preparation of Ethyl Vinyl Ketone.
Japanese Patent Abstract 62142135 (1987).

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