selenoxides having an opticallyactive binaphthyl skeleton work as the reagents for enantioselective oxidation of phosphines to the correspondingphosphineoxides. Treatment of a racemic 2-oxazolin-2-ylferrocenylphosphine with one of the selenoxides in carbon tetrachloride in the presence of phenol affords the correspondingphosphineoxide together with the unreacted starting phosphine, both with moderate
具有旋光联萘骨架的环状硒氧化物用作将膦对映选择性氧化成相应氧化膦的试剂。在苯酚的存在下,用四氯化碳中的一种氧化硒处理外消旋 2-恶唑啉-2-基二茂铁基膦,得到相应的氧化膦和未反应的起始膦,两者都具有中等对映选择性(氧化膦,高达 13% ee ; 膦,高达 29% ee)。
Nickel-Catalyzed CP Cross-Coupling by CCN Bond Cleavage
作者:Meng Sun、Hong-Yu Zhang、Qi Han、Kuo Yang、Shang-Dong Yang
DOI:10.1002/chem.201101930
日期:2011.8.22
Prosperous coupling: A nickel‐catalyzed CP cross‐coupling reaction with Me3SiPPh2 by carbon–cyano bondcleavage has been developed. This method is characterized by its simplicity and wide application to the synthesis of various monophosphorus and P,N bidentate ligands (see scheme).
The Endocyclic Restriction Test: Investigation of the Geometries of Nucleophilic Substitution at Phosphorus(III) and Phosphorus(V)
作者:Michael B. Tollefson、James J. Li、Peter Beak
DOI:10.1021/ja961375g
日期:1996.1.1
to alkoxy phosphine 8, of lithio phosphinite 2 to alkoxy phosphine 9, of lithio phosphinate 3 to alkoxy phosphine oxide 10, and of lithio phosphinite borane 4 to alkoxy phosphine borane 11 proceed in an intramolecular fashion. The transfers of stereogenic phosphorus in the conversions of lithio phosphinite (R)-5 to alkoxy phosphine (R)-12, of lithio phosphinate (S)-6 to alkoxy phosphine oxide (S)-13