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Tri-substituted Silane Reducing Agent
Organosilanes are hydrocarbon-like and possess the ability to serve as both ionic and free-radical reducing agents. These reagents and their reaction by-products are safer and more easily handled and disposed than many other reducing agents. The metallic nature of silicon and its low electronegativity relative to hydrogen lead to polarization of the Si-H bond yielding a hydridic hydrogen and a milder reducing agent compared to aluminum-, boron-, and other metal-based hydrides. A summary of some key silane reductions are presented in Table 1 of the Silicon-Based Reducing Agents brochure.
Triphenylsilane; Triphenylsilanlyl hydride
EINECS Number: 212-333-0
Flashpoint: 200°C (392°F)
HMIS Key: 2-1-1-X
Hydrolytic Sensitivity: 3: reacts with aqueous base
Refractive Index: 1.6160
Application: Review of synthetic utility.1
In presence of di-t-butylperoxide reduces esters to hydrocarbons.2
Undergoes dehydrogenative coupling with alcohols.2
Reference: 1. Handbook of Reagents for Organic Synthesis, Reagents for Silicon-Mediated Organic Synthesis, Fuchs, P. L. Ed., John Wiley and Sons, Ltd., 2011, p. 733-739.
2. Sano, H. et al. Chem. Lett. 1986, 77.
3. Yamanoi, Y. J. Org. Chem. 2005, 70, 9607.
Fieser: F&F: Vol. 12, p 209; Vol. 13, p 334.