P-chiral 1-phosphanorbornenes: from asymmetric phospha-Diels–Alder reactions towards ligand design and functionalisation
作者:Tobias Möller、Peter Wonneberger、Menyhárt B. Sárosi、Peter Coburger、Evamarie Hey-Hawkins
DOI:10.1039/c5dt02564h
日期:——
stereotopic face differentiation was successfully applied to 2H-phospholes which undergo a very efficient and highly stereoselective Diels–Alder reaction giving phosphorus-chiral 1-phosphanorbornenes with up to 87% yield. The observed reaction pathway has been supported by theoretical calculations showing that the cycloaddition reaction between 2H-phosphole 3a and the dienophile (5R)-(−)-menthyloxy-2(5H)-furanone
Dicoordinated 2H-phospholes as transient intermediates in the reactions of tervalent phospholes at high temperature. One-step syntheses of 1-phosphanorbornadienes and phosphorins from phospholes
Synthesis of New Bicyclic P−N Ligands and Their Application in Asymmetric Pd-Catalyzed π-Allyl Alkylation and Heck Reaction
作者:Scott R. Gilbertson、Daniel G. Genov、Arnold L. Rheingold
DOI:10.1021/ol006323h
日期:2000.9.1
[structure: see text] The synthesis of phosphine oxazoline ligands based on P-chiral 1-phosphanorbornadienes is reported. The use of these ligands in palladium catalyzed asymmetric allylation and Heck reaction is described.