Asymmetric rhodium carbenoid insertion into the SiH bond
✍ Scribed by Richard T. Buck; Michael P. Doyle; Martin J. Drysdale; Leigh Ferris; David C. Forbes; David Haigh; Christopher J. Moody; Neil D. Pearson; Qi-Lin Zhou
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 248 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0040-4039
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Kinetic investigations on the insertion of metal-carbenoid intermediates into the Si-H bond have been carried out. A kinetic isotope effect of 1.5 was found and the plot of log kx/krt vs cr for the reaction of arylsilanes with EDA, gave a straight line with p =-0.31. It was thus concluded that the i
Allylsilanes or benzylsilanes of high enantiomeric purity (77-95% ee) are formed from the rhodium(lI) (S)-N-[p-(dodecylphenyl)sulfonyl]prolinate (1) catalyzed decomposition of vinyldiazomethanes or phenyMiazomethanes in the presence of dimethylphenylsilane (3).