Stereochemical Studies of the Electrolytic Reactions of Organic Compounds. V. The Electro-reductive Cyclization of 1-Acyl-8-benzdylnaphthalenes to 1,2-Acenaphthenediols
作者:Tsutomu Nonaka、Mitsuo Asai
DOI:10.1246/bcsj.51.2976
日期:1978.10
electrolytic reductions of several 1-acyl-8-benzoylnaphthalenes were carried out by means of controlled potential electrolysis at a mercury cathode in various catholytes. The isomeric ratio of the cis- and trans-1,2-acenaphthenediols thus formed depended on the kind of acyl group, supporting electrolyte, organic solvent in the catholyte, and cathode potential applied. The mechanism of the reductive cyclization
几种 1-acyl-8-benzoylnaphthalenes 的电解还原是通过在各种阴极电解液中的汞阴极进行控制电位电解来进行的。由此形成的顺式和反式 1,2-苊二醇的异构体比例取决于酰基的种类、支持电解质、阴极电解液中的有机溶剂和施加的阴极电位。从立体化学的角度讨论了还原环化的机理,提出环化不仅可以通过双自由基中间体的分子内偶联发生,还可以通过负碳阴离子中间体阴离子部分的分子内亲核加成发生到其未反应的羰基。