Patent · US Active

Process for preparing quaternary salts of piperidyl esters of mandelic acid

US8309732B2 · kind B2 · utility

0Cited by

2References

5Claims

0Family size

Assignee

Saltigo GmbH · DE

Inventors

Andreas Job
Denys Baskakov · Leverkusen, DE
Ralf Krahwinkel · Langenfeld, DE
Antje Hieronymi

Key dates

Filing date	Apr 6, 2009
Grant date	Nov 13, 2012
Priority date	—
Expiry date	Oct 6, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D211/46
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

What is described is a process for preparing compounds of the general formula (I)in which R1, R2 and R3 independently of one another represent hydrogen, an alkyl group or an aryl group, wherein compounds of the general formula (II)in which R1 and R2 have the meaning given for formula (I),are reacted with an alkylating agent of the general formula (III)R3X (III),in which X represents a halogen atom and R3 has the meaning given for formula (I), if appropriate in a solvent.

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