Patent · US Expired

Preparation of 21-halo steroids

US4401599A · kind A · utility

0Cited by
3References
31Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 17, 1982
Grant dateAug 30, 1983
Priority date—
Expiry dateMay 17, 2002

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07J31/006
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

A process for the preparation of corticoids (XI) which comprises reacting a protected 17-keto steroid (II) with a metallated 1,2-dihaloethene (III).

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