Patent · US Expired

Process for the preparing .alpha.-chloroacrylic acid chlorides

US4066690A · kind A · utility

0Cited by

7References

16Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Dieter Reuschling · Rockenberg, DE
Harald Jensen

Key dates

Filing date	Sep 20, 1976
Grant date	Jan 3, 1978
Priority date	—
Expiry date	Sep 20, 1996

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C51/62
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

.alpha.-Chloroacrylic acid chloride is obtained in a high yield by splitting off HCl from .alpha.,.beta.-dichloropropionic acid chloride at an increased temperature and under reduced pressure in the presence of a tertiary phosphine, a quaternary phosphonium salt or a tertiary phosphine oxide, sulfide, halide or imine. .alpha.-Chloroacrylic acid chloride is important as a starting and intermediate material for further syntheses, especially as the starting material for the total synthesis of prostaglandins according to Corey.

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