Patent · US Active

Diarylphenoxy aluminum compounds

US7608742B2 · kind B2 · utility

6Cited by

2References

25Claims

0Family size

Assignee

BASF SE

Inventors

Marko Friedrich · Lorsch, DE
Klaus Ebel · Lampertheim, DE
Norbert Gotz · Worms, DE
Wolfgang Krause · Münstermaifeld, DE
Christian Zahm · Ludwigshafen, DE

Key dates

Filing date	Mar 3, 2006
Grant date	Oct 27, 2009
Priority date	—
Expiry date	Oct 21, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F5/069
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to diarylphenoxyaluminum compounds which are obtainable by reacting a bis(diarylphenol) ligand of the formula (I)with an alkylaluminum compound and/or a complex aluminum hydride.The invention moreover relates to the use of such diarylphenoxyaluminum compounds as catalysts.Moreover, the invention relates to a method of producing isopulegol by cyclization of citronellal in the presence of diarylphenoxyaluminum compounds as catalysts.The invention also relates to a method of producing menthol by cyclization of citronellal in the presence of diarylphenoxyaluminum compounds as catalysts and subsequent hydrogenation.

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