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Mild reduction of chlorophosphine boranes to secondary phosphine boranes

✍ Scribed by Hubert Lam; David J. Aldous; King Kuok (Mimi) Hii


Book ID
104253898
Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
98 KB
Volume
44
Category
Article
ISSN
0040-4039

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✦ Synopsis


A number of reducing reagents were assessed in the transformation of chlorophosphine boranes to secondary phosphine boranes. The efficiency of the process requires judicious matching between steric and electronic requirements of reductant and the substrate. The stereochemistry of the reduction was investigated by using a chiral precursor.


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Hydrophosphination of Ξ±,Ξ²-unsaturated es
✍ Karine Bourumeau; Annie-Claude Gaumont; Jean-Marc Denis πŸ“‚ Article πŸ“… 1997 πŸ› Elsevier Science 🌐 French βš– 216 KB

The reactivity of primary phosphine-boranes RPH2'BH 3 (R = Ph and Me) towards CH2=CHCO2Me and CH2=CHP(O)(OMe)2 is discussed. Hydrophosphination is the major process. The presence of the free phosphine (0-20%) in the crude media indicates that a competitive hydroboration reaction also occurs. The P-H