A Novel PPh<sub>3</sub> Mediated One-Pot Method for Synthesis of 3-Aryl or Alkyl 1,2-Benzisoxazoles
作者:GuiFang Chen、Hong Liu、ShuJia Li、Yu Tang、PeiYao Lu、KaiTian Xu、YuanMing Zhang
DOI:10.1021/acs.orglett.7b00563
日期:2017.4.7
novel, efficient, and facile protocol has been developed for transforming 2-hydroxybenzonitriles and bromides into a range of 3-aryl or alkyl substituted 1,2-benzisoxazoles in good to excellent yields mediated by PPh3. The electronic and steric effects of bromides on the reaction are discussed. This is the first example to construct a C–C bond and heterocycle in a Barbier–Grignard-type reaction featuring
已开发出新颖,有效且简便的方案,可以将PPh 3介导的2-羟基苄腈和溴化物以良好或优异的产率转化为一系列3-芳基或烷基取代的1,2-苯并恶唑。讨论了溴化物对反应的电子和空间效应。这是第一个在Barbier-Grignard型反应中构建C–C键和杂环的示例,该步骤的特征在于,比金属催化剂一步一步回收PPh 3更为容易。