Dehalogenation of halogenated aromatic compounds

Details Dehalogenation of halogenated aromatic compounds Dehalogenation of halogenated aromatic compounds

1989-03-16

1990-11-27

Garvin, Patrick P.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

From nonhydrocarbon feed

2082621, 2082625, 588208, 588210, 588249, 588901, C07C 120

Patent

active

049737830

ABSTRACT:
Various halogenated aromatic compounds, particularly polychlorinated biphls, and the like, are dehalogenated by reaction with alkali metal in the presence of liquid hydrosiloxane. A selected solvent or diluent may be present. The alkali metal halide reaction product may be removed by washing. It has been found substantially complete dehalogenation is achieved readily at ambient temperatures when the hydrosiloxane is present. The dehalogenated aromatic moiety normally is recovered intact. This method has been found very effective in the destruction and removal of PCB contaminants.

REFERENCES:
patent: 2377689 (1945-06-01), Hyde
patent: 4012401 (1977-03-01), Prokai
patent: 4353793 (1982-10-01), Brunelle
patent: 4526677 (1985-07-01), Grantham et al.
patent: 4853040 (1989-08-01), Mazur et al.
Introduction to the Chemistry of the Silicones, Rochow (1951), pp. 78-91.
Condensed Chemical Dictionary (9th Ed), Hawley (1980), pp. 774 to 776.

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