Patent · US Expired

2-Amino-quinolin-4-one-3-phosphonic acid esters

US4070468A · kind A · utility

2Cited by
0References
37Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 1, 1976
Grant dateJan 24, 1978
Priority date—
Expiry dateMar 1, 1996

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07F9/60
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Anti-allergic 2-amino-quinolin-4-one-3-phosphonic acid esters are prepared by reacting an isatoic anhydride with the carbanion resulting from the treatment of an organo-methane phosphate with a proton abstracting agent.

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