A halogenated hydrocarbon having the general formula: ##STR1## wherein Y represents fluorine, chlorine, bromine or --(CF.sub.2).sub.m W, R represents hydrogen or lower alkyl, R.sup.1 represents lower alkyl, X represents chlorine, bromine or iodine, W represents hydrogen, fluorine or chlorine and m is 1 or 2, is prepared by heating a compound having the general formula: ##STR2## wherein R, R.sup.1, X, Y, W and m have the meanings given above and Z represents chlorine, bromine or iodine, in a polar aprotic solvent together with an alkanolamine, optionally in the presence of a copper salt.
一种卤代烃,其通式为:##STR1## 其中Y代表
氟、
氯、
溴或--(CF.sub.2).sub.m W,R代表氢或低碳基,R.sup.1代表低碳基,X代表
氯、
溴或
碘,W代表氢、
氟或
氯,m为1或2,通过在极性无
水溶剂中与一种醇胺一起加热化合物来制备,该化合物具有通式:##STR2## 其中R、R.sup.1、X、Y、W和m的含义如上所述,Z代表
氯、
溴或
碘,可选择在
铜盐的存在下进行。