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).

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Es wurden folgende Organosilandiole dargestellt: und jeweils bei 180° kondensiert. An Hand von laufenden Untersuchungen des Gewichtsverlustes, des Molekulargewichtes, des OH‐Gruppen‐Gehaltes und der Viskosität wurden Unterschiede im Kondensationsverhalten festgestellt und bindungstheoretisch diskutiert.

Electrochemical Preparation of Organic Diselenides By the method of electrosynthesis a number of organic diselenides can be prepared simply and without danger. The cathodic polarisation of a special selenium electrode in aprotic solutions gives rise to polyselenideanions, which react with electrophilic compounds to the corresponding diselenides of the general formula RSeSeR (2a–e) with R = benzyl, 2‐nitrophenyl, cyclohexyl, isopropyl, 4‐cyanophenyl.

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