3) enantioselective synthesis of phosphineoxides by cleavage of the remaining PO bond. Interestingly, the use of a PIII phosphine precursor afforded a P‐epimer oxazaphospholidine. Hence, the two enantiomeric phosphineoxides can be synthesized starting from either a PV or a PIII phosphine precursor, which constitutes a clear advantage for the stereoselectivesynthesis of sterically hindered phosphineoxides.
Enantiodivergent Formation of C–P Bonds: Synthesis of P-Chiral Phosphines and Methylphosphonate Oligonucleotides
作者:Dongmin Xu、Nazaret Rivas-Bascón、Natalia M. Padial、Kyle W. Knouse、Bin Zheng、Julien C. Vantourout、Michael A. Schmidt、Martin D. Eastgate、Phil S. Baran
DOI:10.1021/jacs.9b13898
日期:2020.3.25
Phosphorous Incorporation (PI, abbreviated Π) reagents for the modular, scalable, and stereospecific synthesis of chiral phosphines and methyl-phosphonate nucleotides are reported. Synthesized from trans-limonene oxide, this reagent class displays an unexpected reactivity profile and enables access to chemical space distinct from that of the Phosphorous-Sulfur Incorporation reagents previously disclosed
Stereoselective Catalytic Synthesis of <i>P</i>-Stereogenic Oxides via Hydrogenative Kinetic Resolution
作者:Héctor Fernández-Pérez、Anton Vidal-Ferran
DOI:10.1021/acs.orglett.9b02606
日期:2019.9.6
derived from an enantiopure P-OP ligand to kinetically resolve racemic α,β-unsaturated phosphane oxides by hydrogenation of the C═C motif and formation of highly enantioenriched (or even enantiopure) P-stereogenic oxides. The practicality of the methodology has been demonstrated by the preparation of potentially functional P-chiral molecules for catalytic enantioselective synthesis.
The nucleophilic displacement route to homochiral arylphosphine oxides
作者:John M. Brown、Joseph V. Carey、Michael J.H. Russell
DOI:10.1016/s0040-4020(01)85600-3
日期:1990.1
the methoxyphosphinate was readily displaced by aliphatic or aromatic Grignard reagents giving the corresponding phosphine oxides with inversion of configuration. This procedure constitutes a simple route to di- and triarylphosphine oxides in ca. 95% e.e.; optical purities were estimated by NMR methods.