Novel Highly Regioselective VO(acac)<sub>2</sub>/TBHP Mediated Oxidation of <i>o</i>-Alkenyl Phenols to <i>o</i>-Hydroxybenzyl Ketones
作者:Alessandra Lattanzi、Antonello Senatore、Antonio Massa、Arrigo Scettri
DOI:10.1021/jo026783j
日期:2003.5.1
on the VO(acac)(2)/TBHP (2 mol %/1.2 equiv) system. VO(acac)(2) first catalyzes the epoxidation of o-alkenyl phenols and then the rearrangement of the epoxyphenols to ketones via the selective benzylic C-O cleavage and 1,2 hydride migration. The protocol has also been applied to set up a useful and easy one-pot conversion of o-alkenyl phenols to benzo[b]furans by means of the sequential addition of
从邻烯基苯酚开始,并基于VO(acac)(2)/ TBHP(2 mol%/ 1.2 equiv)系统描述了一种新颖的温和方法,用于制备邻羟基苄基酮。VO(acac)(2)首先催化邻烯基酚的环氧化,然后通过选择性苄基CO裂解和1,2氢化物迁移将环氧酚重排为酮。该方案也已被应用来在中间体邻羟基苄基酮的生成之后,通过顺序添加TFA来建立有用且容易的一锅法将邻烯基苯酚转化为苯并[b]呋喃。