One-Pot Three-Component Highly Selective Synthesis of Homoallylboronates by Using Metal-Free Catalysis
作者:Ismail Ibrahem、Palle Breistein、Armando Córdova
DOI:10.1002/chem.201103572
日期:2012.4.23
Metal‐free selectivity: The first metal‐free one‐pot three‐component highly chemo‐ and regioselective catalytic synthesis of homoallylboranes using simple N‐heterocyclic carbenes (NHC) and amines is presented. The catalytic reaction between B2(pin)2, α,β‐unsaturated aldehydes and 2‐(triphenylphosphoranylidene)acetate esters proceeds through a catalytic metal‐free β‐boration/Wittig cascade sequence
无金属的选择性:介绍了使用简单的N-杂环卡宾(NHC)和胺类进行的首个无金属的单锅三组分高化学和区域选择性催化合成烯丙烯酮的方法。B 2(pin)2,α,β-不饱和醛与2-(三苯基膦亚基)乙酸酯之间的催化反应通过无催化的β-硼化/ Wittig级联序列进行(参见方案)。