在不分开的电解槽中,在碱金属卤化物存在下,丙二腈和羰基化合物的电解导致取代的1,1,2,2-四氰基环丙烷的形成,产率为60-90%。使用丙二腈代替溴丙二腈成功进行了Wideqvist反应的这种电催化变体。在未分开的电池中,甲醇或乙醇中取代的1,1,2,2-四氰基环丙烷的电催化转化导致取代的2-氨基-4,4-二烷氧基-1,5-二氰基-3-氮杂双环[3.1.0] hex-通过0.05-0.10 F / mol的电量后,二烯的产率为70-95%。
One-pot cascade assembling of 3-substituted tetracyanocyclopropanes from alkylidenemalononitriles and malononitrile by the only bromine direct action
作者:Anatolii N. Vereshchagin、Michail N. Elinson、Nikita O. Stepanov、Gennady I. Nikishin
DOI:10.1016/j.mencom.2009.11.010
日期:2009.11
The new cascade reaction was found: the formation of cyclopropanes from alkylidenemalononitriles and malononitrile by the only bromine direct action; the action of aqueous bromine on the equal amounts of alkylidenemalononitriles and malononitrile in EtOH–H 2 O solutions results in the formation of 3-substituted 1,1,2,2-tetracyanocyclopropanes in 55–98% yields.
Electrochemical transformation of malononitrile and ketones into 3,3-disubstituted-1,1,2,2-tetracyanocyclopropanes
作者:Gennady I. Nikishin、Michail N. Elinson、Tatyana L. Lizunova、Bogdan I. Ugrak
DOI:10.1016/s0040-4039(00)78810-1
日期:1991.6
Electrolysis of malononitrile in the presence of ketones and NaBr in ethanol in undivided cell results in formation of 3,3-disubstituted-1, 1, 2, 2-tetracyanocyclopropanes.