Facile hydroboration with the dimethylsulfide adducts of mono- and bis-(pentafluorophenyl)borane
作者:Elizabeth A. Jacobs、Renukadevi Chandrasekar、Dan A. Smith、Callum M. White、Manfred Bochmann、Simon J. Lancaster
DOI:10.1016/j.jorganchem.2012.07.012
日期:2013.4
adduct of bis(pentafluorophenyl)borane HB(C6F5)2·SMe2 reacts on mixing with alkenes such as 1-hexene and styrene, with selectivities closely following those of the Me2S-free reagent. The mono(pentafluorophenyl)borane H2B(C6F5)·SMe2 also undergoes rapid hydroboration reactions to give the dialkylboranes R2B(C6F5). Treatment of the boranes with trimethylsilylacetylene results in rapid hydroboration to give
双(五氟苯基)硼烷HB(C 6 F 5)2 SMe 2的二甲基硫醚加成物与烯烃(例如1-己烯和苯乙烯)混合后发生反应,其选择性紧随无Me 2 S试剂的选择性。单(五氟苯基)硼烷H 2 B(C 6 F 5)·SMe 2也进行快速硼氢化反应,得到二烷基硼烷R 2 B(C 6 F 5)。用三甲基甲硅烷基乙炔处理硼烷导致快速硼氢化,得到反乙烯基硼烷。H 2 B(C 6 F5)·在室温下用1,5-环辛二烯与SMe 2生成1,4-和1,5-二氢硼化产物的动力学混合物,该混合物在加热后定量异构化为1,5-异构体五氟苯基-9-硼双环[ 3.3.1]壬烷。该双环硼烷结晶为SMe 2加合物,已通过X射线晶体学表征。