Reaction of Metallated tert-Butyl(phenyl)phosphane Oxide with Electrophiles as a Route to Functionalized Tertiary Phosphane Oxides: Alkylation Reactions
作者:Richard K. Haynes、Tin-Lok Au-Yeung、Wai-Kuen Chan、Wai-Lun Lam、Zhi-Yi Li、Lam-Lung Yeung、Albert S. C. Chan、Pauline Li、Mark Koen、Craig R. Mitchell、Simone C. Vonwiller
tertiary phosphaneoxides have been prepared from each of the secondaryphosphaneoxides racemic 1, (SP)-(−)-4 and (RP)-(+)-tert-butylphenylphosphane oxide (5) by lithiation with LDA or nBuLi, or sodiation with sodium hydride, in THF, and then by treatment with a series of primary alkyl halides. Doubly P-chiral ditertiary bis(phosphaneoxides) are also obtained from these metallated secondary phosphane
Preparation of bi- and tridentate doubly P-chiral diphosphine dioxide ligands for asymmetric catalysis
作者:William W.-L Lam、Richard K Haynes、Lam.-Lung Yeung、Eric W.-K Chan
DOI:10.1016/0040-4039(96)00953-7
日期:1996.7
Syntheses of bi- and tridentatedoublyP-chiraldiphosphinedioxides through reaction of the individual enantiomers of optically pure lithiated tert-butylphenylphosphine oxide with different bifunctional electrophiles are described.
The Synthesis and Reactivity of Phosphinous Acid-Boranes
作者:K. Michał Pietrusiewicz、Marek Stankevič
DOI:10.1055/s-2005-861878
日期:——
Phosphinic acid chlorides are converted directly into phosphinous acid-boranes in a process utilizing BH 3 .THF complex as a reducing agent. The process is general and affords phosphinous acid-boranes in good to very high yields. Phosphinous acid-boranes have been found to react readily with alkylating, acylating, reducing, halogenating and deborating agents to produce the corresponding phosphinous acid-borane
The addition of various Grignardreagents to P-t-butyl-P-phenyl-N-phosphinoyl benzaldimine provides a stereoselective method for the synthesis of chiral phosphinoylamines.
向Pt-丁基-P-苯基-N-膦酰基苯甲二胺中添加各种格氏试剂为合成手性膦酰基胺提供了立体选择方法。
Reactions of (RP)- and (SP)-tert-butylphenylphosphinobromidates and tert-butylphenylthionophosphinochloridates with heteroatom nucleophiles; preparation of P-chiral binol phosphinates and related compounds
作者:Tin-Lok Au-Yeung、Ka-Yee Chan、Wai-Kuen Chan、Richard K Haynes、Ian D Williams、Lam Lung Yeung
DOI:10.1016/s0040-4039(00)01950-x
日期:2001.1
Reaction of (RP)- and (SP)-tert-butylphenylphosphinobromidates and tert-butylphenylthionophosphinochloridates with metallated phenol and BINOL alkoxides, thioalkoxides, amides and enolates leading with clean inversion at phosphorus to phosphinates, phosphinothiolates and phosphinoamidates, and the corresponding thionophosphorus compounds are described.