Eine neue Synthese zur Darstellung von organischen Tellurverbindungen unter Verwendung von elektrochemisch erzeugten Polytelluriden

Eine neue Synthese zur Darstellung von organischen Tellurverbindungen unter Verwendung von elektrochemisch erzeugten Polytelluriden
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聚碲化物电气化学实验中有机物结合的新合成

DOI:
10.1002/prac.19843260315
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发表时间:
1984
期刊:
Journal Fur Praktische Chemie-chemiker-zeitung
影响因子:
--
通讯作者:
P. Jeroschewski
P. Jeroschewski
中科院分区:
--
文献类型:
--
作者:
G. Merkel;H. Berge;P. Jeroschewski

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电化学合成多碲离子合成有机碲化合物 碲电极在非质子溶液中的阴极极化产生聚碲阴离子,其与烷基卤化物反应生成相应的二取代二碲。用这种电合成方法可以简单地制备出许多有机二碲化物,而且没有危险。通式R-Te-Te-R(2a-r)的二烷基二碲化物可以高产率制备。与α,ω-二卤化物反应生成杂环,其在环中包含一个或两个碲原子(5a-d,6-8)。碲在甲基碘存在下的电化学还原产生三甲基碘化碲(9)。
A Novel Synthesis of Organic Tellurium Compounds by the Use of Electrochemically Generated Polytelluride-ions The cathodic polarisation of a tellurium electrode in aprotic solutions gives rise to polytelluride anions, which react with alkylhalides to the corresponding disubstituted ditellurides. By this method of electrosynthesis a number of organic ditellurides can be simply prepared and without danger. Dialkylditellurides of the general formula R-Te-Te-R (2a–r) can be produced with high yields. The reaction with α,ω-dihalides gives heterocycles, which involve one or two tellurium atoms in the ring (5a–d, 6–8). The electrochemical reduction of tellurium in the presence of methyliodid yields trimethyltelluroniumiodid (9).