Process for the preparation of halogenated...

Details Process for the preparation of halogenated... Process for the preparation of halogenated...

C - Chemistry, Metallurgy

07

D

C07D 317/42 (2006.01) C08F 34/02 (2006.01) C08F 214/22 (2006.01) C08F 214/26 (2006.01)

Patent

CA 2060193

2060193 9103472 PCTABS00003 A process for the production of a halogenated 2,2-bis(trihaloalkyl)-1,3-dioxolane of formula (I), wherein Rf is perhaloalkyl comprising a 2,2-bis(trihaloalkyl)-1,3-dioxolane in the presence of at least one of La, Ni, Sn, Zn, Fe, Co or Cu is disclosed. A process for the production of a halogenated 2,2-bis(trihaloalkyl)-1,3-dioxolane of formula (II), wherein X is Cl and each Y is independently Cl or F and wherein at least one Y is F, comprising fluorinating a halogenated 2,2-bis(trifluoromethyl)-4,4,5,5-tetrachloro-1,3-dioxolane in the presence of a catalyst which is preferably Cr2O3 is disclosed. A process for the production of a 2,2-bis(trihaloalkyl)-1,3-dioxole of formula (III), comprising dehalogenating substantially only a corresponding trans-2,2-bis(perhaloalkyl)-4,5-difluoro-4,5-dichloro-1,3-dioxolane is disclosed.

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