Process for the preparing .alpha.-chloroacrylic acid chlorides

Details Process for the preparing .alpha.-chloroacrylic acid chlorides Process for the preparing .alpha.-chloroacrylic acid chlorides

1976-09-20

1978-01-03

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 5158

Patent

active

040666905

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.

REFERENCES:
patent: 2050752 (1936-08-01), Fikentscher
patent: 2388657 (1945-11-01), Long
patent: 2396609 (1946-03-01), Schmidt
patent: 2862960 (1958-12-01), Pollack
patent: 2870193 (1959-01-01), Pollack
patent: 3395174 (1968-07-01), Knell et al.
patent: 3940439 (1976-02-01), Harrow

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