Patent · US Expired

Process of the preparation of chiral nicotinic, quinolinic or benzoic acid imidazolinone herbicides

US6441190B1 · kind B1 · utility

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1References
9Claims
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Assignee

Inventors

Key dates

Filing dateJan 14, 2002
Grant dateAug 27, 2002
Priority date—
Expiry dateJan 14, 2022

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07D401/04
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

There is provided a stereospecific process for the preparation of essentially enantiomerically pure imidazolinone herbicides having the R-configuration via (R) 2-amino-2,3-dimethylbutyronitrile.

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