期刊
DALTON TRANSACTIONS
卷 43, 期 40, 页码 15201-15211出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4dt02406k
关键词
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资金
- NSERC of Canada
- Canada Research Chair
- Alexander von Humboldt Foundation
The phosphinimines R3PNSiMe3 (R = t-Bu: 1a, R = Cy: 1b, R = Et: 1c, R = Ph: 1d) are reacted with a series of chtoro and fluoroboranes (9Cl-9-BBN, (C6F5)(2)BCl, PhBCl2 and Mes(2)BF) to access a family of phosphinimine-substituted boranes (2a-d, 3b-d, 4c,d and 6a,b) via Me3SiX elimination (X = Cl, F). The steric and electronic factors governing the formation of monomeric or dimeric products (7c,d) are presented. In addition, in some cases a Lewis acid mediated exchange of Si-bonded methyl groups for a chloro-substituent was observed (5a,b). Based on the phosphinimine-substituted boranes, a series of borenium ion salts (8b-d, 9c, 10b-d) was prepared upon reaction with MeOTf. All Compounds were fully characterized and a number of molecular structures were determined by X-ray diffraction.
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