Processes for preparing β-diketone compound, metal...

Details Processes for preparing β-diketone compound, metal... Processes for preparing β-diketone compound, metal...

2008-07-01

2008-07-01

Witherspoon, Sikarl A (Department: 1621)

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

Organic compounds

Oxygen containing

C568S388000, C568S391000

Reexamination Certificate

active

07393982

ABSTRACT:
Disclosed is a process for preparing a β-diketone compound such as 2,6-dimethyl-3,5-heptanedione, which comprises reacting an ester compound such as an alkyl isobutyrate with a ketone compound such as 3-methylbutanone in the presence of an alkali metal alkoxide as a catalyst. The process comprises a step 1 in which an ester compound CR1R2R3COOQ is reacted with a ketone compound CR4R5R6COCH2R7using an alkali metal alkoxide catalyst to give a β-diketone compound CR1R2R2R3COCHR4R5R6. (In the formulae, R7is hydrogen or an alkyl group of 1 to 4 carbon atoms while others are each independently hydrogen or an alkyl group of 1 to 3 carbon atoms, and at least one of R1to R6is hydrogen.)

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Roy G. Gordon, et al., “New Liquid Precursors for Chemical Vapor Deposition”, Materials Research Society Proceedings, Materials Research Society, Pittsburg, PA, US, vol. 495, 1998, pp. 63-68, XP001012583, ISSN: 0272-9172.

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