of carbonyl compounds has been developed. When carbonyl compounds were allowed to react with trimethylsilyl phenylselenide and tributylstannyl hydride in the presence of a catalytic amount of AIBN as the radical initiator, hydrosilylation of the carbonyl compounds efficiently proceeded to give the corresponding silyl ethers in moderate to good yields. In the absence of carbonyl compounds, the triethylsilyl
Palladium- or Platinum-Catalyzed Novel Double Silylation of α-Diketones or a Benzoylformate with Hexamethyldisilane Affording 1,2-Bis(siloxy)ethenes or a Double Silylated Tartrate Derivative
α-Diketones (benzil, methyl phenyl diketone, acenaphthenequinone, camphorquinone) reacted with hexamethyldisilane in the presence of a Pd or Pt catalyst (PdCl2(PMe3)2, Pt2(dba)3-P(OCH2)3CEt, etc.) to give the corresponding 1,2-bis(trimethylsiloxy)ethenes in excellent to moderate yields, while methyl benzoylformate provided dimethyl 2,3-diphenyl-2,3-bis(O-trimethylsilyl)tartrate.
A New Zincate-Mediated Rearrangement Reaction of 2-(1-Hydroxyalkyl)-1-alkylcyclopropanol
作者:Kenichi Nomura、Seijiro Matsubara
DOI:10.1002/chem.200901054
日期:2010.1.11
A novel rearrangement of 2‐(1‐hydroxyalkyl)‐1‐alkylcyclopropanol has been found. It proceeds in the presence of a catalytic amount of organozinc ate complex to give vic‐diols. The rearrangement can be applied to various types of 2‐(1‐hydroxyalkyl)‐1‐alkylcyclopropanol, which can be easily prepared from the corresponding α,β‐epoxyketones and bis(iodozincio)methane. When bicyclo[13.1.0]pentadecane‐1
[GRAPHICS]When carbonyl compounds were allowed to react with phenyl trimethylsilyl selenide and tributylstannyl hydride in the presence of a catalytic amount of AIBN as a radical initiator, the hydrosilylation of the carbonyl compounds efficiently proceeded to give the corresponding silyl ethers in moderate to good yields.