A Convenient Quick Synthesis of SnBu<sub>2</sub>RCl Derivatives
作者:Nora Carrera、Mónica H. Pérez-Temprano、Ana C. Albéniz、Juan A. Casares、Pablo Espinet
DOI:10.1021/om900326g
日期:2009.7.13
the quick preparation of SnBu2RX (Bu = n-Bu) has been developed using microwave irradiation and column chromatography in acidic alumina. The method can be a good alternative particularly for easy and quick preparation of small amounts for test purposes and, in general, for the synthesis of compounds that cannot be purified by fractional distillation due to thermal lability or low volatility.
已经开发了一种使用微波辐射和酸性氧化铝柱色谱法快速制备SnBu 2 RX(Bu = n -Bu)的简便方法。该方法可以是一种很好的选择,特别是对于出于测试目的的简便快速制备,以及通常用于合成由于热不稳定性或低挥发性而无法通过分馏纯化的化合物的合成而言。
The Scope of Direct Alkylation of Gold Surface with Solutions of C<sub>1</sub>–C<sub>4</sub> <i>n</i>-Alkylstannanes
with dilute tetrahydrofuran or chloroform solutions of tetraalkylstannanes (alkyl = methyl, ethyl, n-propyl, n-butyl) or di-n-butylmethylstannyl tosylate under ambient conditions causes a self-limited growth of disordered monolayers consisting of alkyls and tin oxide. Extensive use of deuterium labeling showed that the alkyls originate from the stannane and not from ambient impurities, and that trialkylstannyl
在环境条件下用稀释的四氢呋喃或四烷基锡烷(烷基 = 甲基、乙基、正丙基、正丁基)或甲苯磺酸二正丁基甲基锡酯的氯仿溶液处理清洁的金表面会导致由烷基组成的无序单层的自限性生长和氧化锡。氘标记的广泛使用表明烷基来源于锡烷而不是来自环境杂质,并且与先前的提议相反,单层中不存在三烷基锡烷基。与 Sn 原子相连的甲基不会转移到表面。乙基转移缓慢,丙基和丁基转移迅速。在所有情况下,氧化锡都以亚单层量共沉积。单层通过椭偏仪、接触角测角仪、偏光调制 IR 反射吸收光谱、X 射线光电子能谱和带有亚铁氰化物/铁氰化物的电化学阻抗谱,显示出非常低的电荷转移电阻。单层的热稳定性及其对溶剂的耐受性与正十八烷硫醇单层的热稳定性相当。对四正丁基锡烷的 THF 溶液中单层沉积动力学的初步检查表明,对锡烷的整体溶液浓度有大约一半的依赖性,这表明可以从单个锡烷分子转移一个以上的烷基。烷基连接的详细结构是未知的,并且提出它涉及一
Wurtz-type reductive coupling reaction of primary alkyl iodides and haloorganotins in cosolvent/H2O(NH4Cl)/Zn media as a route to mixed alkylstannanes and hexaalkyldistannanes
作者:Daniele Marton、Massimo Tari
DOI:10.1016/s0022-328x(00)00388-0
日期:2000.10
Mixed tetra-alkylstannanes R3SnR′ (R=Et, n-Pr, n-Bu and R′=Me, Et, n-Pr, n-Bu, n-Pent) and R2SnR′2 (R=n-Bu and R′=Me, Et, n-Pr, n-Bu) can be easily prepared in a one-pot synthesisvia coupling reaction of alkyl iodides R′I with R3SnX (X=Cl, I) and R2SnCl2 compounds in cosolvent–H2O(NH4Cl) medium mediated by zinc dust. Coupling also occurs with (Bu3Sn)2O. It has been verified that reactions are possible
Surface organometallic chemistry on metals: controlled hydrogenolysis of Me4Sn, Me3SnR, Me2SnR2, MeSnBu3 and SnBu4 (R = methyl, n-butyl, tert-butyl, neopentyl, cyclohexyl) onto metallic rhodium supported on silica
作者:Mostafa Taoufik、Marie-Anne Cordonnier、Catherine C. Santini、Jean-Marie Basset、Jean-Pierre Candy
DOI:10.1039/b407850k
日期:——
Rh–SnMexR4−x (symmetry D3h), in which the bulkiest group, e.g., R, is away from the surface could explain these results. This surface five-coordinate tin species could eliminate an alkyl group, generally a methyl group, thus decreasing the steric bulk around the tin, into the equatorial plane of D3h, via a concerted hydrogen transfer-elimination mechanism to give Rh–SnMex−1R4−x. Then, in the successive steps
ME的控制氢解X SNR 4 - X(0≤ X ≤4; R =甲基,正丁基,叔丁基, 新戊基, 环己基)到Rh / SiO 2上,然后对逸出的气体进行定量和定性分析。在放出的气体中仅检测到MeH和RH。Sn-C键存在氢解作用,而没有任何C-C键发生氢解作用,导致形成接枝的有机金属片段。使用各种有机锡化合物Me x SnR 4 − x,可以确定Sn–C键氢解的区域选择性。初始选择性与分子的空间体积成反比。烷基:t Bu
Preparation and properties of unsymmetrical tetraorganotin compounds
作者:Iain L. Marr、Daniel Rosales、James L. Wardell
DOI:10.1016/0022-328x(88)80438-8
日期:1988.7
Unsymmetrical tetraorganotins, R2R1R2Sn (R = Me, R1 = Bu, R2 = Pe (Pe = pentyl) or Ph; R = Bu, R1 = Pe, R2 = Ph or Me; R = Pe, R1 = Bu, R2 = Me or Ph), BunR4-nSn (n = 1-3, R = Me or Pe) and Pe2R2Sn (R = Me or Ph) have been synthesised. Various physical properties, including mass spectra, 1H and 13C NMR spectra, are reported.
不对称四有机锡,R 2 R 1 R 2 Sn(R = Me,R 1 = Bu,R 2 = Pe(Pe =戊基)或Ph; R = Bu,R 1 = Pe,R 2 = Ph或Me; R = Pe,R 1 = Bu,R 2 = Me或Ph),Bu n R 4 -nSn(n = 1-3,R = Me或Pe)和Pe 2 R 2 Sn(R = Me或Ph)已合成。报告了各种物理性质,包括质谱,1 H和13 C NMR光谱。