Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1992-07-01
1993-12-28
Raymond, Richard L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
568314, 568396, 568388, C07C 4565, C07D30746
Patent
active
052741362
ABSTRACT:
An improved method for the decarbalkoxylation of alkylated .beta.-keto esters to obtain high yields of ketones. In accordance with the method, decarbalkoxylation of alkylated .beta.-keto esters is accomplished by heating the esters in the presence of dilute aqueous alkali and an effective amount of a phase-transfer agent. The method produces commercially practical yields of ketone in a manner which is facile, economical and environmentally safe. Novel methylene-linked pyrethroid ketones produced from the improved method exhibit insecticidal activity against various agricultural pests.
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Brown Richard T.
Mills Frank D.
Mills, Jr. Giles D.
Fado John D.
Poulos Gail E.
Raymond Richard L.
Silverstein M. Howard
The United States of America as represented by the Secretary of
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