申请人:AUSIMONT S.p.A.
公开号:EP0483850A2
公开(公告)日:1992-05-06
Process for preparing alkali-metal or ammonium salts of fluorinated tertiary alcohols
RxR'y(CnF2n+1)kC-OM
wherein R and R', which may be either equal to, or different from, each other, represent a perhalocarbyl group, the halogen atoms of which are constituted by F and Cl and/or Br, a hydrogenated halocarbyl group, the halogen atoms of which are constituted by F and Cl and/or Br; n is comprised within the range of from 1 to 6; M is an alkali metal or an ammonium ion x and/or y are 0 or 1; and k is 1, 2 or 3, with the proviso that x+y+k = 3 , by means of the reaction of a carbonyl compound
R''-CO-R''',
in which R'' and/or R''' = R and/or R' or F, with a tri(alkyl)silaneperfluoroalkyl compound [(C₁-C₄)-alkyl]₃-Si-CnF2n+1 and with a fluoride MF, in an aprotic solvent, at a temperature comprised within the range of from -45°C to +120°C; from said salts, the corresponding alcohols can be obtained by acidic hydrolysis. Some of the obtained products are per se novel.
制备氟化叔醇的碱金属盐或铵盐的工艺
RxR'y(CnF2n+1)kC-OM
其中 R 和 R'可以相互等同或不同,代表全卤代羰基,其卤原子由 F 和 Cl 和/或 Br 构成;氢化卤代羰基,其卤原子由 F 和 Cl 和/或 Br 构成;x 和/或 y 是 0 或 1;以及 k 是 1、2 或 3,但 x+y+k = 3,通过羰基化合物的反应生成
R''-CO-R''''、
其中 R'' 和/或 R''' = R 和/或 R' 或 F,与三(烷基)硅烷-全氟烷基化合物 [(C₁-C₄)-烷基]₃-Si-CnF2n+1,以及氟化物 MF,在钝溶剂中,温度范围为 -45°C 至 +120°C;从上述盐类中,可通过酸性水解得到相应的醇。所得到的一些产品本身就是新颖的。