作者:Naoki Kise、Syun Agui、Shinji Morimoto、Nasuo Ueda
DOI:10.1021/jo051498w
日期:2005.11.1
The intermolecular reductive coupling of aromatic ketones with acylimidazoles was effected by electroreduction in the presence of chlorotrimethylsilane and gave α-trimethylsiloxy ketones and esters. The best result was obtained using Bu4NPF6 as a supporting electrolyte and a Pb cathode in THF. The α-trimethylsiloxy-containing products were transformed to the corresponding α-hydroxy ketones and esters
在氯代三甲基硅烷的存在下,通过电还原作用实现芳族酮与酰基咪唑的分子间还原偶联,得到α-三甲基甲硅烷氧基酮和酯。使用Bu 4 NPF 6作为支持电解质和THF中的Pb阴极可获得最佳结果。通过在THF中用TBAF处理,将含α-三甲基甲硅烷氧基的产物转化为相应的α-羟基酮和酯。该方法对于δ-和ε-酮基酰基咪唑的分子内还原偶联也是有效的。