Preparation of monohalohydroquinone monocarboxylates/dicarboxyla

Details Preparation of monohalohydroquinone monocarboxylates/dicarboxyla Preparation of monohalohydroquinone monocarboxylates/dicarboxyla

1985-06-25

1988-02-23

Moyer, Donald B.

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

Organic compounds

Carboxylic acid esters

260408, C07C 69017, C07C 6928, C07C 6916, C11C 300

Patent

active

047271825

ABSTRACT:
Monohalohydroquinone monocarboxylates are selectively prepared by halogenating a hydroquinone monocarboxylate, or admixture thereof with a hydroquinine dicarboxylate and a minor amount of hydroquinone, with a chlorine, bromine or sulfuryl halide halogenating agent; such monocarboxylates are facilely converted into the corresponding dicarboxylates by acylation. Both the monocarboxylates, e.g., monochlorohydroquinone monoacetate, and dicarboxylates, e.g., monochlorohydroquinone diacetate, are useful organic intermediates.

REFERENCES:
patent: 2588978 (1952-03-01), Gearhart et al.
Diana et al., J. Med. Chem., vol. 20, No. 6, pp. 757-761, 1977, RS 1J5.
Levy et al., Annalen, vol. 210, p. 140 (1881).
Schied et al., Annalen, vol. 218, p. 213 (1883).
van Erp, Ber., vol. 58, p. 664 (1925).

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