Patent · US Expired

Process for the preparation of hydantoin derivatives

US3946033A · kind A · utility

8Cited by
2References
11Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 20, 1973
Grant dateMar 23, 1976
Priority date—
Expiry dateNov 20, 1993

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07D233/74
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Hydantoin derivatives are produced by reacting PA1 1. a glycine derivative, PA1 2. a primary amine, and PA1 3. a diaryl carbonate Thus, various kinds of hydantoin derivatives can be obtained without using an isocyanate.

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