Traceless OH-Directed Wacker Oxidation-Elimination, an Alternative to Wittig Olefination/Aldol Condensation: One-Pot Synthesis of <i>α</i>,<i>β</i>-Unsaturated and Nonconjugated Ketones from Homoallyl Alcohols
作者:Venkati Bethi、Rodney A. Fernandes
DOI:10.1021/acs.joc.6b01899
日期:2016.9.16
A new method for one-pot synthesis of β-substituted and β,β-disubstituted α,β-unsaturated methyl ketones from homoallyl alcohols by sequential PdCl2/CrO3-promoted Wacker process followed by an acid-mediated dehydration reaction has been developed. Remarkably, internal homoallyl alcohols delivered regioselectively nonconjugated unsaturated carbonyl compounds under the same protocol. A new starting material-based
用于一锅合成的新方法β-取代和β,β -二取代的α,β通过顺序的PdCl不饱和的甲基酮从高烯丙基醇2 / CRO 3促进的瓦克法然后酸介导的脱水反应已经开发。值得注意的是,内部均烯丙基醇在相同的方案下可选择性地引入区域选择性的非共轭不饱和羰基化合物。证明了一种新的基于原料的α,β-不饱和和非共轭甲基酮的合成方法。