Patent · US Expired

Process for preparing chlorinated hydroquinone dimethyl ethers

US4066708A · kind A · utility

2Cited by

0References

7Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Hans Millauer · Eschborn, DE
Rudolf Pistorius

Key dates

Filing date	Sep 15, 1976
Grant date	Jan 3, 1978
Priority date	—
Expiry date	Sep 15, 1996

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C41/28
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Chlorinated hydroquinone dimethyl ethers of the formula ##STR1## wherein R is H or Cl are prepared by reacting p-benzoquinone tetramethyl diketals of the formula ##STR2## wherein R is defined as above, with an excess of hydrogen chloride in an aprotic solvent at a temperature from about -50.degree. to +50.degree. C. The products I are valuable intermediates for the preparation of dyestuffs, insecticides and pharmaceutics.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.