Patent · US Expired

Method for producing heterocyclic compounds

US6667401B2 · kind B2 · utility

1Cited by

7References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hermann Seifert · Bensberg, DE
Uwe Stelzer · Burscheid, DE

Key dates

Filing date	Mar 26, 2002
Grant date	Dec 23, 2003
Priority date	—
Expiry date	Mar 26, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D417/06
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for the preparation of compounds of the formula (I) in which R1, A, D, X and Z have the meanings given in the description,by reacting compounds of the formula (II)  in whichA, D and X have the meanings given above,with a base and in the presence of a diluent, and subsequently reacting the reaction mixture with the mixture of CCMP/CMP (2-chloro-5-chloromethylpyridine/2-chloro-5-methylpyridine) and the corresponding hydrochlorides.

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