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
Synthesis of Optically Active Phosphorus Compounds via Metal Phosphinites Generated by Reaction of Optically Active Selenophosphinates with Phenyllithium
Sequential treatment of opticallyactive Se-benzyl t-butylphenylselenophosphinate with PhLi and then with electrophiles such as alkyl halides and elemental selenium gave opticallyactivephosphoruscompounds in good chemical and optical yields with a retention of configuration at phosphorus atom, together with benzyl phenyl selenide.
The reactivity of arylphosphine oxides under Bouveault-Blanc reaction conditions
作者:Ewelina Korzeniowska、Anna E. Kozioł、Elżbieta Łastawiecka、Anna Flis、Marek Stankevič
DOI:10.1016/j.tet.2017.07.004
日期:2017.8
makes use of the inexpensive sodium as the electron donor and an alcohol as the proton source, and provides an attractive alternative to reactions mediated by expensive transition metals. Under optimized conditions numerous mono- and diaryl substituted phosphine oxides were transformed into the corresponding mono- and dicyclohexyl-substituted phosphine oxides in good yields. Furthermore, the formation
Alkylation of Phosphine Boranes by Phase-Transfer Catalysis
作者:Hélène Lebel、Sébastien Morin、Valérie Paquet
DOI:10.1021/ol0347139
日期:2003.6.1
[GRAPHICS]The alkylation of phosphine boranes with various electrophiles proceeds with good to excellent yields in a biphasic solution in the presence of tetrabutylammonium bromide as a phase-transfer catalyst.