PRODUCTION OF HIGH QUALITY BETA-BROMOETHYLBENZENE

Title:

PRODUCTION OF HIGH QUALITY BETA-BROMOETHYLBENZENE

Document Type and Number:

Japanese Patent JP3804085

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To obtain β-bromoethylbenzene in a high purity and in a high production efficiency, capable of producing less α-bromoethylbenzene as a by-product and useful for the synthetic intermediate of a medicine, etc., by reacting styrene with hydrogen bromide while supplying a specific amount of air under irradiation of an ultraviolet radiation.
SOLUTION: This method for producing β-bromoethylene is to react (A) styrene with (B) hydrogen bromide under the irradiation of an ultraviolet radiation while supplying (C) 0.3-3.0vol.% air based on the component B. For example, a solution containing 25-50vol.% component A concentration (e.g. using n- heptane, toluene, perchloroethylene, etc., as a solvent), the components B and C are supplied simultaeously and reacted under the irradiation of the ultraviolet radiation, and the solution of the produced objective compound is taken out continuously.

Inventors:

Horie Haruyuki
Akihiro Nomura
Takumi Kagawa

Application Number:

JP19652695A

Publication Date:

August 02, 2006

Filing Date:

August 01, 1995

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