Patent · US Active

Process for preparing benzofuran derivatives substituted at position 5

US8748636B2 · kind B2 · utility

13Cited by

6References

22Claims

0Family size

Assignee

Sanofi · FR

Inventors

Fréderic Bailly · Paris, FR
Xavier Bon · Paris, FR
Philippe Vayron · Paris, FR

Key dates

Filing date	Jan 16, 2013
Grant date	Jun 10, 2014
Priority date	—
Expiry date	Jan 16, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C251/60
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The disclosure relates to a process for preparing benzofuran derivatives of general formula I:in which R, R1, and R2 are as defined in the disclosure; by coupling the hydroxylamine with a diketone of general formula III:in order to form an oxime that is then cyclized by heating in order to form the desired compound.

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