Preparation of benzyl ketones

Details Preparation of benzyl ketones Preparation of benzyl ketones

1990-03-07

1991-04-16

Reamer, James H.

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

Organic compounds

Oxygen containing

C07C 4552

Patent

active

050084615

ABSTRACT:
Benzyl ketones of the general formula I ##STR1## where R.sup.1 is C.sub.1 -C.sub.8 -alkyl which is unsubstituted or substituted by cycloalkyl or aryl and R.sup.2 and R.sup.3 are each halogen, C.sub.1 -C.sub.4 -alkyl, hydroxyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.2 -C.sub.4 -methylenedioxy, are prepared by a process in which a glycol monoether of the general formula II ##STR2## where R.sup.1, R.sup.2 and R.sup.3 have the abovementioned meanings and R.sup.4 is C.sub.1 -C.sub.8 -alkyl, is converted in the presence of silica, a phosphate or a zeolite at from 50.degree. to 500.degree. C. and under from 0.01 to 50 bar.

REFERENCES:
patent: 3491153 (1970-01-01), Lyness
patent: 3920668 (1975-11-01), Nickl et al.
patent: 4230893 (1980-10-01), Gal
Chem. Abstr., vol. 105, 190 622z.

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