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.
Synthesis of enantiomerically pure styryl and dienyl phosphine oxides via Pd-catalyzed Heck coupling reaction
作者:K. Michał Pietrusiewicz、Maciej Kuźnikowski、Marek Koprowski
DOI:10.1016/s0957-4166(00)80060-9
日期:1993.10
[4 + 2] Cycloaddition of Vinylphosphine Oxides to α-Oxy-<i>o</i>-xylylene as a route to Phosphorylated Naphthyl and Biaryl Scaffolds
作者:Sławomir Frynas、Elżbieta Łastawiecka、Anna E. Kozioł、Anna Flis、K. Michał Pietrusiewicz
DOI:10.1021/acs.joc.8b02659
日期:2019.2.15
alpha-Oxy-o-xylylene, a highly reactive diene readily accessible from benzocyclobutenol, undergoes Diels-Alder reaction with vinylphosphine oxides, yielding the corresponding 2-phosphorylated 1-hydroxy-1,2,3,4-tetrahydronaphthalenes in excellent yields. Use of unsubstituted and trans-2-aryl-substituted vinylphosphine oxides leads to cycloadducts with complete regioselectivity and with cis/trans selectivity up to 19:1 in the most favorable case. In the case of P-stereogenic trans-2-aryl-substituted vinylphosphine oxides, a virtually complete chirality transfer from P to C can be achieved. Dehydration and aromatization of the obtained cycloadducts bearing the resolved P-stereogenic phosphinoyl groups can be carried out to afford the valuable P-stereogenic and axially chiral phosphorylated 1,2'-binaphthyl ring system. Cases of restricted rotation around Csp(3)-Csp(2) single bond in some tetrahydronaphthalene cycloadducts have also been revealed.
MAFFEI, MICHEL;BUONO, GERARD, NEW J. CHEM., 12,(1988) N1-12, C. 923-930
作者:MAFFEI, MICHEL、BUONO, GERARD
DOI:——
日期:——
Knoevenagel Condensation of Phosphinoylacetic Acids with Aldehydes: An Efficient One-Pot Strategy for the Synthesis of P-Functionalized Alkenyl Compounds
phosphinoylacetic acids derived from P(O)–H compounds were used as the starting materials in the reaction, providing a highly stereoselective and efficient method for constructing α,β-unsaturated phosphine oxides. Moreover, this simple and practical procedure provides an alternative and more environmentally friendly synthesis strategy for this type of P-functionalized alkenyl compounds.