PROCESS FOR THE PREPARATION OF HALOGENATED 2,2-BIS(TRIFLUOROMETHYL)-1,3-DIOXOLANES

摘要

process for the manufacture of 2,2-bis (trihaloalkyle) - 1,3-dioxolane halide of formula (i), in which rf is perhaloalkyle comprising 2,2-bis (trihaloalkyle) - 1,3 dioxolane in the presence of at least one la, ni, sn, zn, fe, co and cu.process for the production of 2,2-bis (trihaloalkyle) - 1,3-dioxolane halide of formula (ii), where x is cl, and each is independently cl, f, and where at least one of the fluorination is f, 2,2-bis (trifluoromethyl) - 1,3-dioxolane, tetrachloro - reaction "in the presence of a catalyst which is preferably a cr2o3.process for the production of 2,2-bis (trihaloalkyle) - 1,3 - dioxole of formula (iii), including the products substantially only a trans -, 2,2-bis (perhaloalkyle) - 4,5 - difluoro - 4,5 dichloro 1,3-dioxolane.