期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 76, 期 11, 页码 4794-4799出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo200708e
关键词
-
资金
- EPSRC
- F. Hoffmann-La Roche Ltd
- EU
A new protocol for the catalytic asymmetric deprotonation of a phosphine borane using s-BuLi and sub-stoichiometric quantities of chiral diamines is reported. The method involves three sequential additions of s-BuLi, and use of (-)-sparteine or the (+)-sparteine surrogate facilitates access to P-stereogenic phosphines with opposite configuration. The method is exemplified by the catalytic asymmetric synthesis of each enantiomer of precursors to QuinoxP*, trichickenfootphos, and Mini-PHOS.
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