| 摘要 |
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. |
