Electrophilic bis-fluorophosphonium dications: Lewis acid catalysts from diphosphines

被引：54
作者：
Holthausen, Michael H. [1 ]
Hiranandani, Rashi R. [1 ]
Stephan, Douglas W. [1 ,2 ]
机构：
[1] Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, Canada
[2] King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah 21589, Saudi Arabia
来源：
CHEMICAL SCIENCE | 2015年 / 6卷 / 03期
基金：
加拿大自然科学与工程研究理事会;
关键词：
MOLECULAR-STRUCTURES; PHOSPHONIUM SALTS; CARBONYL DIFLUORIDE; BOND ACTIVATION; NMR-SPECTRA; 1,8-BIS(DIPHENYLPHOSPHINO)NAPHTHALENE; PHOSPHINE; CATIONS; CO2; HYDROGENATION;
D O I：
10.1039/c5sc00051c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Stepwise oxidation of 1,8-bis(diphenylphosphino)naphthalene and a series of (oligo) methylene-linked diphosphines with XeF2 followed by fluoride abstraction yields a family of compounds featuring phosphine, phosphonium and phosphorane moieties in close proximity. The bisphosphonium ions [(C10H6)(Ph2PF)(2)](2+) (5) and [CH2(Ph2PF)(2)](2+) (9a) exhibit remarkable Lewis acidity arising from the proximity of the phosphonium centers. The effectiveness of bisphosphonium dications (5, 9a-e) is examined in a series of Lewis acid catalysed transformations.
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收藏
页码：2016 / 2021
页数：6
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