由四氢呋喃溶液中的二苯基二碲化物和锂金属生成的苯基碲化碲用烷基卤化物处理,生成烷基苯基碲化物C 6 H 5 TeR(R = CH 3,C 2 H 5,C 3 H 7,iC 3 H 7, C 4 H 9,C 14 H 29),为光敏黄色油,产率为62%至81%。十四烷基衍生物不能通过蒸馏纯化,因此被转化为二碘化物。热敏烷基苯基碲二卤化物,RC 6 H 5的TeX 2,通过用碘(R = CH处理碲化物获得3,C 2 H ^ 5,C 3 H ^ 7,IC 3 ħ 7,C 4 H ^ 9,C 14 H ^ 29)或溴(R = C 4 H ^ 9)。报道了碲化物的紫外可见和NMR光谱数据。
En 特别,反应性相对于 de PhS • , PhSe • et I • 与 de PhS • , PhSe • et I • 属 a partir du disulfure de phenyle, diseleniure de phenyle et du β-iodo 苯乙烯 ou du (diphenyl-1,1 iodo -2) 乙烯
The reaction of diorganyl diselenides and ditellurides with organic mercury compounds. A convinient method for the synthesis of unsymmetrical organic selenides and tellurides
作者:Yoshiyuki Okamoto、Takefumi Yano
DOI:10.1016/s0022-328x(00)87494-x
日期:1971.5
The reaction of diphenyl diselenide with di-n-butylmercury in dioxane at refluxing temperature gave n-butyl phenyl selenide (80% yield) and metallic mercury. When the reaction was carried out at room temperature, n-butyl phenyl selenide and bis(phenylseleno)mercury were obtained. This reaction furnished a convinient method for the preparation of several organic selenides as well as tellurides.
Substituent effects and stereochemistry in125Te NMR spectroscopy. Diorganyltellurium dihalides and some tellurides and ditellurides
作者:Helmut Duddeck、Armin Biallaβ
DOI:10.1002/mrc.1260320509
日期:1994.4
125Te, 19F and 13C NMR data for 33 compounds containing tellurium substituents are presented. The 125Te chemical shifts in (PhTeCl2)R compounds are between δ = 878 and 1023; in corresponding (PhTeF2)R compounds they are 220 to 360 ppm larger. Effects of substituents and conformational interconversions (dynamic 125Te NMR) are discussed. Several diastereomers were identified in (PhTeCl2)R derivatives
The first successfully controlled radicalpolymerization (CRP) of ethylene is reported using several organotellurium chain‐transfer agents (CTAs) under mild conditions (70 °C, 200 bar of ethylene) within the concept of organotellurium‐mediated radicalpolymerization (TERP). In contrast to preceding works on CRPs of ethylene applying reversible addition–fragmentation chain‐transfer (RAFT), the TERP
据报道,在有机碲介导的自由基聚合(TERP)的概念下,在温和条件下(70°C,乙烯为200 bar),使用了几种有机碲链转移剂(CTA)首次成功地成功地控制了乙烯的乙烯自由基聚合(CRP)。与先前关于使用可逆加成-断裂链转移(RAFT)的乙烯CRP的工作相反,TERP系统提供了聚乙烯链的高活性和链端官能度。得到摩尔质量分布,分散度在1.3和2.1之间,平均摩尔质量为5000 g mol -1。如同在RAFT系统中一样,不断增长的聚亚乙烯基自由基的高反应性导致了固有的副反应。但是,对于提出的TERP系统,这种副反应不会导致死链,而通过选择CTA甚至可以有效地抑制它。
Evaluation of phenylorganotellurium compounds as radical precursors in dialkylzinc-mediated radical addition to CN double bonds
作者:Fabien Cougnon、Laurence Feray、Samantha Bazin、Michèle P. Bertrand
DOI:10.1016/j.tet.2007.09.014
日期:2007.11
Diethylzinc-mediated radical addition to CNbonds was investigated in the presence of phenylorganotellurium compounds as radical precursors. As group transfer agents, secondary alkyl phenyl tellurides were shown to be about twice as reactive as the corresponding alkyl iodides towards ethyl radical. Their use was proven to be advantageous regarding both chemoselectivity and yield. The replacement of
Synthesis of internal acetylenes from vinylic tellurides
作者:Jun Terao、Nobuaki Kambe、Noboru Sonoda
DOI:10.1016/s0040-4039(98)01085-5
日期:1998.7
Vinylictellurides were prepared by carbotelluration of acetylenes under light. The subsequent oxidation with sodium hypochlorite followed by pyrolysis gave internal acetylenes in good yields. Combination of these reactions provides a useful method for introduction of alkyl groups to terminal acetylenes.