114431-81-1Relevant articles and documents
Copper-free and copper-promoted conjugate addition reactions of bis(triorganosilyl) zincs and tris(triorganosilyl) zincates
Auer, Gertrud,Weiner, Barbara,Oestreich, Martin
, p. 2113 - 2116 (2006)
In the course of our investigations directed towards an asymmetric copper-catalyzed silyl transfer from bis(triorganosilyl) zincs onto α,β-unsaturated carbonyl compounds, the presence of Lewis acidic lithium cations and the uncatalyzed background reaction
CuI-catalyzed conjugate addition of silyl boronic esters: Retracing catalytic cycles using isolated copper and boron enolate intermediates
Plotzitzka, Jacqueline,Kleeberg, Christian
, p. 6915 - 6926 (2015/02/05)
Copper(I)-catalyzed conjugate additions of silyl boronic esters to α,β-unsaturated aldehydes, ketones, and esters are synthetically well-established reactions. For the first time central reactive intermediates as well as the boron enolates as the primary
New generation of organosilyl radicals by photochemically induced homolytic cleavage of silicon-boron bonds
Matsumoto, Akira,Ito, Yoshihiko
, p. 5707 - 5711 (2007/10/03)
Unlike bis(diethylamino)organosilylboranes, bis(diisopropylamino)organosilylboranes, which have UV absorption at longer wavelength than 300 nm, undergo photolysis to afford pairs of an organosilyl radical and a bis(diisopropylamino)boryl radical by homolytic scission of the silicon-boron bonds. Generation of organosilyl radical and organoboryl radical was confirmed by trapping experiments using TEMPO (2,2,6,6-tetramethylpiperidine N-oxyl). The organosilyl radical thus generated induces not only silylation of mono-olefins and silylative cyclization of dienes but also polymerization to afford polymers bearing organosilyl termini. On the other hand, the bis(diisopropylamino)boryl radical generated is not incorporated into the olefin adducts.
