Ionic telomerization of chlorofluoropropionyl fluorides with hexafluoropropene oxide
作者:J. Kvíčala、O. Paleta、V. Dědek
DOI:10.1016/s0022-1139(00)82397-0
日期:1990.5
Six chlorofluoropropionyl fluorides were synthesized by converting a −CCl3 group in perhalogenated chlorofluoropropanes to a −COF group in two reaction steps. The ionic telomerization of the acyl fluorides with hexafluoropropene oxide, catalyzed by fluoride ion, afforded mainly a mixture of 1:1 to 1:3 telomers. In some cases, substitution of chlorine for fluorine in the acyl moiety and hexafluoropropene
通过在两个反应步骤中将全卤代氯氟丙烷中的-CCl 3基团转化为-COF基团,合成了六种氯氟丙酰氟。在氟离子的催化下,酰基氟与六氟环氧丙烷的离子端粒化主要提供了1:1至1:3端粒的混合物。在某些情况下,作为副反应发生了氯取代酰基部分中的氟和六氟环氧丙烷的低聚反应。讨论了起始酰基氟中氯的数目对端粒分布和副产物形成的影响。酰基的反应顺序在调聚反应的氟化物YCOF是:CF 3 CClF( ),的CClF 2 CF 2()> CF3 CCl 2(),的CClF 2 CClF()>的CClF 2 CCl 2(),CCL 2 FCClF( )。讨论了可能的反应途径。