Patent · US Expired

Preparation of 2,2-disubstituted-2,3-dihydrobenzofurans

US5200532A · kind A · utility

0Cited by

3References

8Claims

0Family size

Assignee

BASF SE

Inventors

Albrecht Harreus · Ludwigshafen, DE
Bernd Wolf · Niederkirchen, DE
Jochen Wild · Ruppertsberg, DE

Key dates

Filing date	Aug 27, 1991
Grant date	Apr 6, 1993
Priority date	—
Expiry date	Aug 27, 2011

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C49/825
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the preparation of a 2,3-dihydrobenzofuran I ##STR1## or a derivative thereof, where R.sup.a and R.sup.b are C-organic radicals, involves reacting a 2-hydroxybenzyl alcohol II ##STR2## in the presence of an acidic ion exchanger resin and in the presence of an inert dehydrating substance. Novel 2,3-dihydrobenzofurans Ia, 2-acylphenols IVa and 2-hydroxybenzyl alcohols IIa, a process for their preparation, and their use as intermediates are also described.

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