The invention pertains to a method for the manufacture of a perfluorovinylether by hydrodehalogenation of a halofluoroether (HaloFE) having general formula (l-A) or RfO-CRf'X-CRf"Rf"'X' (l-A) wherein Rf represents a C1-C6 perfluoro(oxy)alkyl group; Rf', Rf" and Rf'", equal or different from each other, independently represent fluorine atoms or C1-C5 perfluoro(oxy)alkyl groups; X and X', equal or different from each other, are independently selected from CI, Br or I; (l-B) wherein Rf* and Rf*', equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoro(oxy)alkyl groups; Y1 and Y2, equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoroalkyl groups; X and X' are as above defined; said method comprising contacting said halofluoroether (HaloFE) with hydrogen in the presence of a catalyst comprising at least one transition metal (M) of group VI 11 B and tin.
本发明涉及一种通过卤代
氟醚(HaloFE)的脱卤化制备全
氟乙烯醚的方法,其中HaloFE具有通式(l-A)或RfO-CRf'X-CRf"Rf"'X'(l-A),其中Rf表示C1-C6
全氟(氧)烷基;Rf',Rf"和Rf"',相同或不同,独立地表示
氟原子或C1-C5
全氟(氧)烷基;X和X',相同或不同,独立地选自CI,Br或I;(l-B)其中Rf*和Rf*',相同或不同,独立地表示
氟原子或C1-C3
全氟(氧)烷基;Y1和Y2,相同或不同,独立地表示
氟原子或C1-C3
全氟烷基;X和X'如上所定义;所述方法包括在催化剂的存在下,将所述卤代
氟醚(HaloFE)与氢接触,所述催化剂包括VIIB族中的至少一种过渡
金属(M)和
锡。