Stereoselective electrocatalytic cyclization of 3-substituted 2,2-dicyanocyclopropane-1,1-dicarboxylic acid esters to form 6-substituted (1R,5R,6R)*-4,4-dialkoxy-5-cyano-2-oxo-3-azabicyclo[3.1.0]hexane-1-carboxylic acid esters
作者:M. N. Elinson、S. K. Fedukovich、Z. A. Starikova、A. N. Vereshchagin、P. A. Belyakov、S. V. Gorbunov、G. I. Nikishin
DOI:10.1007/s11172-006-0222-2
日期:2006.1
Electrolysis of 3-substituted 2,2-dicyanocyclopropane-1,1-dicarboxylic acid esters in alcohols in an undivided cell in the presence of NaBr or NaOAc afforded 6-substituted (1R,5R, 6R)*-4,4-dialkoxy-5-cyano-2-oxo-3-azabicyclo[3.1.0]hexane-1-carboxylic acid esters in 80–95% yields.
3-取代的 2,2-二氰基环丙烷-1,1-二羧酸酯在 NaBr 或 NaOAc 存在下在未分开的电池中的醇中电解得到 6-取代的 (1R,5R, 6R)*-4,4-二烷氧基- 5-氰基-2-氧代-3-氮杂双环[3.1.0]己烷-1-羧酸酯的产率为80-95%。