Preparation of 4,4'-dihydroxy-'alkylstiblbene with reduced dimer

Details Preparation of 4,4'-dihydroxy-'alkylstiblbene with reduced dimer Preparation of 4,4'-dihydroxy-'alkylstiblbene with reduced dimer

1996-09-13

1998-03-03

Clardy, S. Mark

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

Organic compounds

Oxygen containing

C07C 39215

Patent

active

057236925

ABSTRACT:
Preparation of dihydroxy-.alpha.-alkylstilbenes with reduced undesirable by-products can be achieved by carrying out dehydrohalogenation of a substantially uniform dispersion of a halogenated intermediate of the desired product in the presence of water and a polar protic solvent.

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Zaheer, S. H. et al., Journal of the Chemical Society, Part 1, pp. 3360-3362 (1954).
US Patent Application entitled, "Process for the Preparation and Purification of 4,4'-Dihydroxy-.alpha.Substituted Stilbene" filed Feb. 29, 1996; Serial No. 08/608,807; Applicants: A. P. Haag et al.

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