Process for the preparation of 3-benzoyl benzofuran derivatives

Details Process for the preparation of 3-benzoyl benzofuran derivatives Process for the preparation of 3-benzoyl benzofuran derivatives

1990-10-16

1993-11-30

Ivy, C. Warren

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549467, C07D30780

Patent

active

052667111

ABSTRACT:
The invention relates to a process for the preparation of 3-benzoyl benzofuran derivatives of general formula: ##STR1## wherein a benzofuran derivative of general formula: ##STR2## is reacted in situ in the presence of aluminium chloride successively with phosgene or oxalyl chloride, and then with a phenolic derivative of general formula: ##STR3## to produce a complex which is hydrolysed to form the desired compound of 3-benzoyl benzofuran.

REFERENCES:
patent: 3947470 (1976-03-01), Brenner et al.
patent: 3950355 (1976-04-01), Carson
patent: 4766223 (1988-08-01), Grain et al.
patent: 4780480 (1988-10-01), Dunn
Chemical Abstracts, vol. 94, No. 23, Jun. 8, 1981, p. 640, resume 192122b, Columbus, Ohio, US; and HU-A-18 236 (E. GY. T. Gyogyszervegyeszeti Gyar) May 28, 1980.
Journal of Organic Chemistry, vol. 48, No. 19, Sep. 23, 1983, pp. 3214-3219, American Chemical Society, Easton, US; M. Kakushima et al.: "Regioselective synthesis of acylpyrroles".

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