研究了两种(有机甲硅烷基)甲基氯化镁R(CH 3 2 SiCH 2 MgCl(R = CH 3和C 6 H 5),氯化银和溴化银在乙醚中的反应。除了预期的偶合产物[R(CH 3)2 SiCH 2- ] 2以外,反应还会进行,从而形成大量式R(CH 3)2 SiCH 2 CH(CH 3)OC 2 H 5的化合物和别的。该结果表明,由格氏试剂引起的自由基对溶剂的攻击与自偶联反应同时发生。
The Phenylthiocyclopropylsilyl Group: a Useful Latent Hydroxy Group
作者:Rémy Angelaud、Yannick Landais
DOI:10.1016/s0040-4020(00)00112-5
日期:2000.3
The α-dimethyl(1-phenylthio)cyclopropylsilylgroup was used as a new masked hydroxy group. Three procedures have been devised to allow the oxidation of this silicon group in the presence of various functionalities. The desired alcohols are obtained in high yields with retention of configuration at the carbon centre.
Reaction of (bromodifluoromethyl)phenyldimethylsilane with organometallic reagents
作者:Takamasa Fuchikami、Iwao Ojima
DOI:10.1016/s0022-328x(00)81910-5
日期:1981.6
1,1,2,2-tetrafluoroethane (IV), in excellent yield. The silver(I) salt-catalyzed reaction of II with ethylmagnesium bromide gave the cross-coupling product, (1,1-difluoropropyl)phenyldimethylsilane (V) as well as III and IV. When cuprousbromide was employed as catalyst, the reaction of II with ethylmagnesium bromide afforded 1-phenyldimethylsilyl-1-propene (VI) and 3-phenyldimethylsilyl-2-pentene
bstituted ethylenediamines, R3Si(CH2)n-NHCH2CH2NH2 (R = CH3, C6H5 or 4-CH3C6H4 n = 1 or 3), were prepared by the reaction of haloalkylsilanes with ethylenediamine. The cleavage of a methyl group from silicon by concentrated sulfuric acid was used for the preparation of 1,3-bis-[N-(2-aminoethyl)aminomethyl]-1,1,3,3-tetramethyldisiloxane. The proton and carbon-13 NMR spectra of these compounds are reported
一系列N-有机甲硅烷基烷基取代的乙二胺R 3 Si(CH 2)n -NHCH 2 CH 2 NH 2(R = CH 3,C 6 H 5或4-CH 3 C 6 H 4 n = 1或3)通过卤代烷基硅烷与乙二胺的反应制备。将浓硫酸从硅上裂解甲基用于制备1,3-双-[ N-(N-(2-氨基乙基)氨基甲基] -1,1,3,3-四甲基二硅氧烷。报告了这些化合物的质子和碳13 NMR谱。
Photochemical, Nickel-Catalyzed C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Reductive Cross-Coupling of α-Silylated Alkyl Electrophiles and Allylic Sulfones
作者:Yan Xu、Muliang Zhang、Martin Oestreich
DOI:10.1021/acscatal.2c03070
日期:2022.9.2
A nickel-catalyzed C(sp3)–C(sp3) cross-electrophile coupling between α-silylated alkylbromides and an allylic sulfone is reported. Instead of a metal as the stoichiometric reductant, this photochemical reductive process relies on a Hantzschester but does not require an exogenous photocatalyst. The role of the silyl group in the α-position and its stabilizing effect on the assumed carbon-centered