Use of metal chelate complexes in dehalogenation

Details Use of metal chelate complexes in dehalogenation Use of metal chelate complexes in dehalogenation

A - Human Necessities

62

D

23/399, 260/694,

A62D 3/34 (2007.01) A62D 3/37 (2007.01) C07C 13/18 (2006.01) C07C 17/23 (2006.01) C07D 487/22 (2006.01)

Patent

CA 1338313

A method for dehalogenation of organohalogen compounds, eg environmental pollutants in industrial waste. The organohalogen is reacted with a reducing agent in the presence of a selected metal-centred corrin, porphyrin or phthalocyanine complex. Pref- erred complexes are hydrolysis products of cyanocobalamin, of formula: Image in which R1 is NH2 or OH, R is H, CH2CH2COOH or CH2CH2CONH2, R3 is H, CH2CH2COOH or CH2CH2CONH2, and R4 is NHCH2CH(OH)CH3, OH or NH2. The complex is preferably immobilised on a substrate. Some novel metal-centred porphyrin complexes are also described. A dehalogen- ation apparatus using the method of the invention is also described.

598990

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