Reactions of perfluorocycloimines with (polyfluoroalkoxy)trimethylsilanes and polyfluoroalkyltrifluoromethanesulfonates
作者:Masakazu Nishida、Taizo Ono、Takashi Abe
DOI:10.1016/s0022-1139(01)00411-0
日期:2001.7
The reactions of F-(5,6-dihydro-2H-1,4-oxazine) and F-(3,4-dihydro-2H-pyrrole) were investigated using two series of reagents: one is the polyfluoroalkylating agent RfOSO2CF3 and the other is the (polyfluoroalkoxy)trimethylsilane RfOSi(CH3)3. Systematic study with polyfluoroalkyl groups such as CF3CH2, C2F5CH2, CHF2CH2, and (CF3)2CH revealed that the regio-chemistry, isomer distribution, product distribution
使用两种试剂研究了F-(5,6-dihydro-2 H -1,4-恶嗪)和F-(3,4-dihydro-2 H-吡咯)的反应:一种是多氟烷基化试剂RfOSO 2 CF 3,另一个是(聚氟烷氧基)三甲基硅烷RfOSi(CH 3)3。使用CF 3 CH 2,C 2 F 5 CH 2,CHF 2 CH 2和(CF 3)2等多氟烷基进行系统研究CH显示,这些氟取代基的结构以及化学计量比改变了区域化学,异构体分布,单取代,二取代和三取代产物之间的产物分布,甚至反应路径。在F-(5,6-二氢-2 H -1,4-恶嗪)的反应中发现了显着的取代作用:在3位的取代阻止了CF 3 CH 2 OSO 2 CF 3的N-多氟烷基化。与这两个杂环体系与C 6 F 5 Si(CH3)3。包括有关两种试剂的反应机理的讨论。