Preparation of ketones

Details Preparation of ketones Preparation of ketones

1989-07-18

1990-08-21

Reamer, James H.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

568314, 568319, 568346, 568354, 568388, 568397, C07C 4548

Patent

active

049507630

ABSTRACT:
Ketones of the general formula (I) ##STR1## where R.sup.1 and R.sup.2 independently of one another are each alkyl, cycyloalkyl, arylalkyl, aryl or hetaryl, and one or more of the radicals R.sup.1 and R.sup.2 carry one or more hydrogen atoms on the .alpha.-carbon atom, are prepared by reacting two carboxylic acids of the general formulae (IIa/IIb), R.sup.1 --COOH (IIa) and R.sup.2 --COOH (IIb) or by reacting a carboxylic acid R.sup.1 --COOH (IIa) and a ketone ##STR2## or by reacting a mixture of IIa, IIb and Ib, in the gas phase in the presence of a catalyst, by a process in which a catalyst is used whose active material contains at least 50% by weight of titanium dioxide having a specific surface area greater than 10 m.sup.2 /g.0.

REFERENCES:
patent: 4528400 (1985-07-01), Cryberg et al.
patent: 4570021 (1986-02-01), Cryberg et al.
Takeda, Chem. Abst., vol. 103, #8004v (1985).
Criado et al., Chem. Abst., vol. 91, #73890d (1979).
Takeda, Chem. Abst., vol. 102, #138494w (1985).
Houben/Weyl, Methoden der Organischen Chemie, vol. VII/2a, pp. 627-633 (1973).

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