dialkylaminosilanes a number of newrearrangements was observed. When acted upon by ketene, dialkylaminosilanes, depending on the conditions applied, produce either amides of β-siloxyvinylacetic acid (I) (route “a”, scheme A) or amides of silylated aceticacid (II) (routes “b”, “c”). In both cases an intermediate α-siloxyvinyldialkylamine (III) was isolated which may be rearranged to give amide (II).
The nitrogen–silicon σ-bond of aminosilanes added across the triple bond of arynes to give varied 2-silylaniline derivatives straightforwardly.
氮硅σ键的氨基硅烷通过与芳炔的三重键反应,直接得到多种2-硅烷基苯胺衍生物。
Direct Electrophilic Silylation of Terminal Alkynes
作者:Aleksey A. Andreev、Valeri V. Konshin、Nikolai V. Komarov、Michael Rubin、Chad Brouwer、Vladimir Gevorgyan
DOI:10.1021/ol036328p
日期:2004.2.1
text] A variety of alkynylsilanes were efficiently prepared via direct silylation of terminalalkynes with aminosilanes in the presence of zinc halides. Base- and nucleophile-sensitive functionalities were perfectly tolerated under the above reaction conditions. Initial mechanistic studies support the electrophilic character of this transformation.
Rearrangements of p-LiC6H4SMR3 to p-R3MC6H4SLi compounds (M=Ge OR Si). A novel synthesis of organogermyl- and -silylbenzene thiols
作者:A.R. Bassindale、D.R.M. Walton
DOI:10.1016/s0022-328x(00)87839-0
日期:1970.12
Organolithium reagents prepared from BrC6H4SMR3 compounds (R3M = Me3Si,Et3Si, PhMe2Si, Me3Ge) and butyllithium rearrange rapidly in ether solution to R3MC6H4SLi species, which upon treatment with water yield benzene thiols R3MC6H4SH. Under Wurtz—Fittig “in situ” conditions the organosodium intermediate NaC6H4SSiMe3 does not rearrange but couples normally with Et3SiBr to give Et3SiC6H4SSiMe3, which
由BrC 6 H 4 SMR 3化合物(R 3 M = Me 3 Si,Et 3 Si,PhMe 2 Si,Me 3 Ge)和丁基锂制备的有机锂试剂在乙醚溶液中快速重排为R 3 MC 6 H 4 SLi物质,用水处理后,得到苯硫醇R 3 MC 6 H 4 SH。在Wurtz-Fittig“原位”条件下,有机钠中间体NaC 6 H 4 SSiMe 3不会重排,但通常与Et 3偶联SiBr生成Et 3 SiC 6 H 4 SSiMe 3,经甲醇分解得到Et 3 SiC 6 H 4 SH。这些反应为制备甲硅烷基和经细菌取代的苯硫醇提供了有用的新途径。
Wet-chemical synthesis of different bismuth telluride nanoparticles using metal organic precursors – single source vs. dual source approach