Electrochemical transformation of cyanoacetic ester and alkylidenecyanoacetic esters into 3-substituted 1,2-dicyanocyclopropane-1,2-dicarboxylates
作者:M. N. Elinson、S. K. Feducovich、S. G. Bushuev、D. V. Pashchenko、G. I. Nikishin
DOI:10.1007/bf02503485
日期:1998.6
Electrolysis of cyanoaceticester and alkylidenecyanoacetic esters in an undivided cell in the presence of mediators (alkali metal halides) gives rise to 3-substituted, 1,2-dicyanocyclopropane-1,2-dicarboxylates in 60–95% yields.
Synthesis of various cyclopropyl methyl bromide and its derivatives from ketones and/or aldehydes and some β-dicarbonyl compounds in the presence of BrCN and Et3N
作者:Saeed Gholizadeh、Kazem D. Safa、Nader Noroozi Pesyan
DOI:10.1007/s13738-019-01600-x
日期:2019.6
aldehydes with ethyl cyanoacetate or malononitrile and cyanogen bromide (BrCN) in the presence of Et3N to give products in excellent yields within about 3 s. All structures were characterized by IR, 1H-NMR, 13C-NMR, and Mass spectroscopy techniques. The reaction mechanism was discussed.