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M. N. élinson S. K. Fedukovich S. V. Lindeman M. S. Aleksanyan Yu. T. Struchkov G. I. Nikishin 《Russian Chemical Bulletin》1989,38(7):1467-1471
| 1. | On electrolysis in methanol in the presence of the catalyst carrier NaI, tetramethyl propane-1,1,3,3-tetracarboxylate cyclizes with the exclusive formation of tetramethyl cyclopropane-1,1,2,2-tetracarboxylate with the yield up to 98%. |
| 2. | In the presence of NaBr and LiCl, hexamethyl pentane-1,1,3,3,5,5-hexacarboxylate, hexamethyl cyclopentane-1,1,2,2,4,4-hexacarboxylate, and tetramethyl tetrahydrofuran-2,2,4,4-tetracarboxylate are also formed; the last may be obtained with the yield up to 60%. |
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Elinson M. N. Fedukovich S. K. Zaimovskaya T. A. Vereshchagin A. N. Nikishin G. I. 《Russian Chemical Bulletin》2003,52(10):2241-2246
Electrolysis of cycloalkylidenemalononitriles and malononitrile in MeOH in an undivided cell in the presence of the NaBr—NaOMe mediator system gives spirotricyclic compounds containing cyclopropane and pyrroline fragments in 50—77% yields. Spirobicyclic and spirotricyclic tetracyanocyclopropanes undergo electrolysis in alcohols to afford spirotricyclic and spirotetracyclic products containing cyclopropane and pyrroline fragments in 50—93% yields. 相似文献
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Conclusions The electrochemical oxidation of malonic esters in methanol, ethanol, or acetonitrile in the presence of alkali metal bromides as catalyst-carriers, with the use of 1.8–2 F of electricity per mole of the starting malonic ester leads to esters of propane-1,1,2,2,3,3-hexacarboxylic acid in a yield of up to 90%.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 352–355, February, 1989. 相似文献