Boronic Acid-Catalyzed Selective Oxidation of 1,2-Diols to α-Hydroxy Ketones in Water
作者:Julius M. William、Masami Kuriyama、Osamu Onomura
DOI:10.1002/adsc.201300961
日期:2014.3.24
2‐diols to their corresponding α‐hydroxy ketones in aqueous medium. The oxidation step was accomplished using dibromoisocyanuric acid (DBI) as a terminal chemical oxidant or an electrochemical process. The electrochemical process was based on the use of platinum electrodes, methylboronic acid [MeB(OH)2] as a catalyst and bromide ion as a mediator. Electro‐generated OH− ions (EGB) at the cathode acted
发现通过形成硼酸酯可活化1,2-二醇,从而增强了在水性介质中1,2-二醇选择性氧化为其相应的α-羟基酮的能力。氧化步骤是使用二溴异氰尿酸(DBI)作为末端化学氧化剂或电化学方法完成的。电化学过程是基于使用铂电极,甲基硼酸[MeB(OH)2 ]作为催化剂和溴离子作为介体的。电产生的OH -离子(EGB)在阴极用作基和“BR +在充当氧化剂阳极产生”离子。各种环状和无环1,2-二醇作为底物被选择性地氧化成相应的α羟基酮通过 它们的硼酸酯通过两种氧化方法,收率良好。