Process for producing 3,5-dichloro-.alpha.-methylstyrene

Details Process for producing 3,5-dichloro-.alpha.-methylstyrene Process for producing 3,5-dichloro-.alpha.-methylstyrene

1979-02-02

1980-10-28

Sneed, Helen M. S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C07G 2500

Patent

active

042306426

ABSTRACT:
1-Bromo-3,5-dichlorobenzene is reacted with magnesium in a solvent and acetone is added to react it with the reaction product and a mineral acid is added to hydrolyze the resulting .alpha.-(3,5-dichlorophenyl) isopropoxymagnesium bromide and then, the product is dehydrated to obtain 3,5-dichloro-.alpha.-methylstyrene. 3,5-Dichloro-.alpha.-methylstyrene is useful intermediate for various agricultural chemicals, medicines and dyes and also useful monomer for rubbers, plastics and resins.

REFERENCES:
patent: 2192613 (1940-03-01), Livak et al.
patent: 2725405 (1955-11-01), Britton et al.
patent: 2996554 (1961-08-01), Olah et al.
patent: 3042664 (1962-07-01), Price
patent: 3167714 (1973-10-01), Kominami et al.
patent: 3911034 (1975-10-01), Sato et al.
Stempel, JACS 73 455-456 (1951) from C.A. 46 2001e (1952).
Chemical Abstracts 52 11917a-c (1958).
Chemical Abstracts 47 10899b (1953).
Chemical Abstracts 42 3339i (1948).

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