申请人:Istituto Guido Donegani
公开号:US04929772A1
公开(公告)日:1990-05-29
There is disclosed a process for preparing polyhalogenated carbinols having formula: ##STR1## by reacting a compound having formula: ##STR2## with a system consisting of a compound having formula: ##STR3## and of a divalent metal or of a metal salt, in protic dipolar solvents, in which formulae R=H, an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkadienyl, phenyl, naphthyl, anthracyl group, a heterocyclic radical, optionally substituted; R'=H, a haloalkyl, --CN, --COOR" group with R" equal to H or to an alkyl group; X.sup.1 =Cl, Br; =X.sub.2 =F, Cl, Br; X.sup.3 =Cl, Br, CF.sub.3, CCl.sub.3 ; Y=Br or Cl when X.sup.1, X.sup.2 and X.sup.3 are different from Br.
本发明揭示了一种制备多卤代碳醇的方法,其化学式为:##STR1## 通过将化合物(化学式:##STR2##)与由化合物(化学式:##STR3##)和二价金属或金属盐组成的体系在质子双极溶剂中反应,其中化学式中,R = H,烷基,环烷基,烯基,环烯基,烯二烯基,苯基,萘基,蒽基,杂环基,可选地取代;R' = H,卤代烷基,-CN,-COOR",其中R"等于H或烷基;X1 = Cl,Br;X2 = F,Cl,Br;X3 = Cl,Br,CF3,CCl3;当X1,X2和X3不等于Br时,Y = Br或Cl。