Preparation of 2,5-bis(1,1-dimethyl-4-hexyloxycarbonylbutyl)hydr

Details Preparation of 2,5-bis(1,1-dimethyl-4-hexyloxycarbonylbutyl)hydr Preparation of 2,5-bis(1,1-dimethyl-4-hexyloxycarbonylbutyl)hydr

1996-09-12

1997-08-19

Barts, Samuel

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

Organic compounds

Carboxylic acid esters

C07C 6976

Patent

active

056590679

ABSTRACT:
A description is given of a process for the preparation of 2,5-bis(1,1-dimethyl-4-hexyloxycarbonylbutyl)hydroquinone by reacting 5-methyl-4-hexenoic acid (m)ethyl ester, which is obtainable by reacting 2-hydroxy-2-methyl-3-butene with tri(m)ethyl orthoacetate in the presence of an acid catalyst, with hydroquinone according to Friedel-Crafts, and transesterifying the resulting 2,5-bis(1,1-dimethyl-4-(m)ethoxycarbonylbutyl)-hydroquinone product direct with hexanol in a one-pot process.

REFERENCES:
patent: 4484000 (1984-11-01), Howell
patent: 4608435 (1986-08-01), Howell
patent: 4835323 (1989-05-01), Howell

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