Procedure for the photochlorination of alkyl-aromatic compounds

Details Procedure for the photochlorination of alkyl-aromatic compounds Procedure for the photochlorination of alkyl-aromatic compounds

1994-02-18

1996-05-07

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415765, 20415794, 20415799, 2041581, C07C 1700

Patent

active

055142540

ABSTRACT:
An alkyl-aromatic compound is selectively photochlorinated in the side chain in a cyclic reaction system wherein said compound is continuously circulated between a container and photochlorination reactor.
The compound is partially chlorinated after each passage through the photochlorination reactor, the number of passages depending on the degree of chlorination required.
The procedure is particularly useful for the preparation of benzyl chloride, benzal chloride and benzotrichloride, and the corresponding halogen-substituted derivatives of the nucleus.

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patent: 4348265 (1982-09-01), Strom
patent: 4643811 (1987-02-01), Langlois
patent: 4689425 (1987-08-01), Kachhy et al.
patent: 5279719 (1994-01-01), Sunagawa et al.

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