Patent · US Expired

Method for producing ortho-alkylated benzoic acid derivatives

US6350904B1 · kind B1 · utility

12Cited by

0References

7Claims

0Family size

Assignee

MERCK KGAA · DE

Inventors

Ekkehard Bartmann · Langen (Hessen), DE
Ingeborg Stein · Langen (Hessen), DE

Key dates

Filing date	Apr 5, 2001
Grant date	Feb 26, 2002
Priority date	—
Expiry date	Apr 5, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/91
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for the preparation of ortho-alkylated benzoic acid derivatives of the formula I characterized in that an aryl bromide of the formula II is reacted with a secondary or tertiary organolithium compound and CO2.

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