Patent · US Active

Process for the preparation of sulfomate-carboxylate derivatives

US8115030B2 · kind B2 · utility

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5Claims
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Assignee

Inventors

Key dates

Filing dateMar 30, 2006
Grant dateFeb 14, 2012
Priority date—
Expiry dateMar 18, 2029

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C2601/14
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Disclosed is a process for the preparation of Compound (III), salt or solvate thereof by reacting Compound (I), salt or solvate thereof with Compound (II) in a toluene solvent in the presence of an additive such as water or an alcohol. Also disclosed is a process for the preparation of Compound (IV) comprising hydrolyzing the obtained Compound (III) if necessary, and then oxidizing.In the formula, R1 is hydrogen, optionally substituted lower alkyl, optionally substituted aryl or optionally substituted aryl lower alkyl, and R2 is optionally substituted lower alkyl, optionally substituted cycloalkyl or optionally substituted aryl lower alkyl.

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