Process for the preparation of homogentisic lactone

Details Process for the preparation of homogentisic lactone Process for the preparation of homogentisic lactone

1978-07-20

1980-01-08

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30783

Patent

active

041827201

ABSTRACT:
Process for the preparation of homogentisic lactone by reacting hydroquinone with a di(lower alkyl) chloro (or bromo) malonate and an alkali metal lower alkoxide to give an alkali metal 3-carbo(loweralkoxy)-5-hydroxy-2-oxidobenzo[b]furan which is subsequently decarboxylated by treatment with a strong mineral acid to give homogentisic lactone. The latter is readily converted into homogentisic acid by conventional means.

REFERENCES:
patent: 3862133 (1975-01-01), Layer
Smith et. al. Jour. Am. Chem. Soc. vol. 58. 1936. pp. 629-635.

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