Electrocatalytic reactions: anion radical cyclobutanation reactions and electrogenerated base reactions
作者:Greg A.N. Felton
DOI:10.1016/j.tetlet.2007.11.171
日期:2008.1
Intermolecular anionradical [2+2] cyclobutanation reactions have been observed between vinyl sulfones and vinyl/propenyl ketones. The products are novel and formed electrocatalytically, although yields are at best modest (11–45%). Competing mechanisms are discussed. Additionally, the electrochemical reduction of vinyl alkyl sulfones in acetonitrile leads to near quantitative formation of cyanomethylation
Electrochemical Reduction of Activated Olefins in Deuterated Solvents. II. A Regioselective Deuteriation Catalytic Process from alpha,beta-Ethylenic Aryl Sulfones.
作者:Jacques Delaunay、Ahmed Ghanimi、Sophie Diederichs、Jacques Simonet、Inger Søtofte、George W. Francis、József Szúnyog、Bengt Långström
DOI:10.3891/acta.chem.scand.52-0165
日期:——
The title compounds were electrochemically reduced in aprotic dimethyl sulfoxide-d(6), acetonitrile-d(3), or organic solvents containing heavy water. When a catalytic amount of charge passed through the cell, alpha-deuteriation of olefins occurred in high yield. Since both chemical and electrochemically formed bases were found to be totally inefficient in the performance of such deuteriation, a radical chain process is tentatively proposed. During attempted total reduction of substrates, tetradeuteriated dimers were isolated, from which information on the reduction mode and coupling process can be obtained.
DELAUNAY, JACQUES;MABON, GILLES;ORLIAC, ARMELLE;SIMONET, JACQUES, TETRAHEDRON LETT., 31,(1990) N, C. 667-668
作者:DELAUNAY, JACQUES、MABON, GILLES、ORLIAC, ARMELLE、SIMONET, JACQUES