Patent · US Active

Synthesis of chromanol derivatives

US11673874B2 · kind B2 · utility

1Cited by

3References

20Claims

0Family size

Assignee

BASF SE

Inventors

Melanie WEINGARTEN · Ludwigshafen am Rhein, DE
Wolfgang Siegel · Schifferstadt, DE
Michael Puhl · Hirschberg, DE

Key dates

Filing date	Aug 16, 2019
Grant date	Jun 13, 2023
Priority date	—
Expiry date	Jan 1, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D311/72
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for the production of chromanol derivatives, more specifically to a process for preparing a compound of the general formula I wherein R1, R2 and R3 independently of each other are selected from hydrogen and methyl, R4 is selected from C-1-C6-alkyl, and X is selected from C1-C20-alkyl and C2-C20-alkenyl.

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