Patent · US Active

Process for the preparation of 2 substituted tetrahydropyranols

US8779169B2 · kind B2 · utility

2Cited by

4References

18Claims

0Family size

Assignee

BASF SE

Inventors

Gabriele Gralla · Mannheim, DE
Ralf Pelzer · Rastenberg, DE

Key dates

Filing date	May 26, 2011
Grant date	Jul 15, 2014
Priority date	—
Expiry date	Oct 15, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/582
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyrans by reacting 3-methylbut-3-en-1-ol(isoprenol) with the corresponding alkenealdehydes in the presence of a strongly acidic ion exchanger with subsequent hydrogenation. Specifically, the present invention relates to a corresponding process for the preparation of 2-isobutyl-4-hydroxy-4-methyltetrahydropyran by reacting isoprenol with prenal, with subsequent hydrogenation.

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