Silicon-Induced Ene-Type Reaction in the Thermal Conversion of Enolates to β-Silyl Enones with Molecular Dioxygen
摘要:
Reaction of alkyl, acetoxy, and silyl enol ethers of 3-(organosilyl)cyclohexanone with molecular dioxygen in toluene at 110 degrees C produced the corresponding conjugated enones in yields up to 88% yield. The reaction of the same type failed on replacement of the silyl group at the C-3 position with an isopropyl group. These results indicate the existence of an unprecedented silicon-induced ene-type reaction. Its reaction mechanism, generality, limitations, and exceptions are discussed.
The synthesis of αβ-unsaturated ketones from β-silylenones and β-silylynones
作者:Ian Fleming、David A. Perry
DOI:10.1016/s0040-4020(01)93277-6
日期:——
Conjugate addition, followed by alkylation, bromination and desilyl-bromination make the β-silylketone (4) an a3d3-synthon (5) and the β-silylynone (6) a 2a3d3-synthon (7).
共轭加成,然后进行烷基化,溴化和去甲硅烷基溴化反应,使β-甲硅烷基酮(4)成为3 d 3-合成子(5)和β-甲硅烷基酮(6)成为2a 3 d 3-合成子(7)。
Synthesis of cyclic β-silylenones via oxidative rearrangement of tertiary α-hydroxy allylsilanes with PCC
作者:Xia Wu、Jian Lei、Zhen Lei Song
DOI:10.1016/j.cclet.2010.10.018
日期:2011.3
Abstract An oxidative rearrangement of cyclictertiary α -hydroxy allylsilanes has been carried out in refluxing ClCH 2 CH 2 Cl with pyridinium chlorochromate (PCC). The reaction provides a convenient method to synthesize cyclic β -silylenones in modest to excellent yields.
FLEMING, I.;PERRY, D. A., TETRAHEDRON, 1981, 37, N 23, 4027-4034
作者:FLEMING, I.、PERRY, D. A.
DOI:——
日期:——
Silicon-Induced Ene-Type Reaction in the Thermal Conversion of Enolates to β-Silyl Enones with Molecular Dioxygen
作者:Jih Ru Hwu、Chien Hsien Chen、Chuan-I Hsu、Asish R. Das、Yen Cheng Li、Lung Ching Lin
DOI:10.1021/ol800007v
日期:2008.5.1
Reaction of alkyl, acetoxy, and silyl enol ethers of 3-(organosilyl)cyclohexanone with molecular dioxygen in toluene at 110 degrees C produced the corresponding conjugated enones in yields up to 88% yield. The reaction of the same type failed on replacement of the silyl group at the C-3 position with an isopropyl group. These results indicate the existence of an unprecedented silicon-induced ene-type reaction. Its reaction mechanism, generality, limitations, and exceptions are discussed.