Process for preparing 2,2-dimethoxy-2-phenylacetophenone

Details Process for preparing 2,2-dimethoxy-2-phenylacetophenone Process for preparing 2,2-dimethoxy-2-phenylacetophenone

1990-07-05

1992-01-14

Reamer, James H.

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

Organic compounds

Oxygen containing

C07C 454564

Patent

active

050813072

ABSTRACT:
2,2-Dimethoxy-2-phenylacetophenone is prepared by reacting benzil with dimethyl sulfate and alkali metal methylate in a nonpolar organic solvent (e.g. xylene, cyclohexane) in the presence of one or more of catalysts selected from the group consisting of polyethylene glycol, a polyethylene glycol dialkyl ether and a crown ether. The reaction can be carried out more preferably in the presence of diglyme or triglyme or a mixture of diglyme or triglyme and polyethylene glycol.

REFERENCES:
patent: 4101584 (1978-07-01), Ranus et al.
patent: 4190602 (1980-02-01), Brunisholz et al.
patent: 4287367 (1981-09-01), Kuesters et al.
patent: 4749804 (1988-06-01), Schloemer

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