124151-53-7Relevant academic research and scientific papers
Homo- and cross-olefin metathesis coupling of vinylphosphane oxides and electron-poor alkenes: Access to P-stereogenic dienophiles
Vinokurov, Nikolai,Michrowska, Anna,Szmigielska, Anna,Drzazga, Zbigniew,Wojciuk, Grzegorz,Demchuk, Oleg M.,Grela, Karol,Pietrusiewicz, K. Michal,Butenschoen, Holger
, p. 931 - 938 (2006)
Vinylphosphane oxides 6 undergo catalytic olefin homo-metathesis leading to achiral and P-stereogenic diphosphane dioxides 7 with exclusive (E)-selectivity. Similarly, EWG-substituted vinylphosphane oxides 11, 12 could be prepared with complete (E)-olefin selectivity via olefin cross-metathesis with electron-deficient substrates, such as methyl acrylate and 2-fluorostyrene, using nitro-Hoveyda ruthenium pre-catalyst III. Cross- and homo-metathesis of chiral non-racemic vinylphosphane oxides proceeds without racemization of the phosphorus center of chirality.
Nitro-substituted Hoveyda-Grubbs ruthenium carbenes: Enhancement of catalyst activity through electronic activation
Michrowska, Anna,Bujok, Robert,Harutyunyan, Syuzanna,Sashuk, Volodymyr,Dolgonos, Grigory,Grela, Karol
, p. 9318 - 9325 (2007/10/03)
The design, synthesis, stability, and catalytic activity of nitro-substituted Hoveyda-Grubbs metathesis catalysts are described. The highly active and stable meta- and para-substituted complexes are attractive from a practical point of view. These catalys
Synthesis of substituted p-stereogenic vinylphosphine oxides by olefin cross-metathesis
Demchuk, Oleg M.,Pietrusiewicz, K. Michal,Michrowska, Anna,Grela, Karol
, p. 3217 - 3220 (2007/10/03)
(Matrix presented) Substituted vinylphosphine oxides have been prepared in good yield and exclusive (E)-olefin selectivity via olefin cross-metathesis using Grubbs and Hoveyda-type ruthenium catalysts. In addition, metathesis of chiral vinylphosphine oxid
OPTICALLY ACTIVE PHOSPHINE OXIDES. 8. SYNTHESIS OF NONSYMMETRICAL 1,2-DIPHOSPHINYLETHENES AND RELATED SYSTEMS
Pietrusiewicz, Michal,Wisniewski, Witold,Zablocka, Maria
, p. 337 - 348 (2007/10/02)
The synthesis of the nonsymmetrical and the optically active trans-1,2-diphosphinylethenes has been accomplished.The employed addition-elimination route is potentially general and utilizes readily accessible secondary phosphine oxides and tertiary 1-halog
