Process

Details Process Process

C - Chemistry, Metallurgy

07

C

260/615.2, 260/5

C07C 39/10 (2006.01) C07C 45/63 (2006.01)

Patent

CA 1085874

ABSTRACT 2,2,6,6-Tetrachloro(or tetrabromo)cyclohexanone is prepared by reacting in the liquid phase chlorine or bromine with a cyclohexanone compound of formula Image I where Y is hydrogen or chlorine (to produce the tetrachloro compound) or hydrogen or bromine (to produce the tetrabromo compound) in the presence as catalyst of an organophosphorous compound of formula Image II where X is chlorine or bromine; n is 0 or 1; and when n is 0, m is 0 or 2, R1 is alkyl or phenyl, and R2 and R3 are hydrogen, alkyl or phenyl; and when n is 1, m is 0, and R1, R2 and R3 are the same and each is Image , alkyl or phenyl, or R1 is hydrogen and R2 and R3 are alkyl or phenyl; or a salt thereof. Each alkyl is of 1-10 carbon atoms.

302985

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