α-Allenyl Ethers as Starting Materials for Palladium Catalyzed Suzuki–Miyaura Couplings of Allenylphosphine Oxides with Arylboronic Acids
作者:Yao-Zhong Chen、Ling Zhang、Ai-Min Lu、Fang Yang、Lei Wu
DOI:10.1021/jo502485u
日期:2015.1.2
We disclose here the first palladium-catalyzed Suzuki–Miyaura couplings of aryl ethers functionalized allenylphosphine oxides with arylboronic acids. This new methodology with α-allenyl ethers as starting materials provides a novel approach to generate phosphinoyl 1,3-butadienes and derivatives with medium to excellent yields. The reaction tolerates a variety of functional groups to afford ranges of
我们在这里公开了芳族醚官能化的烯丙基膦氧化物与芳基硼酸的第一个钯催化的Suzuki-Miyaura偶联。这种以α-烯基醚为原料的新方法提供了一种新颖的方法来生成膦酰基1,3-丁二烯及其衍生物,且中等至极高的收率。该反应容许各种官能团,以提供结构上不同的取代的膦酰基1,3-丁二烯。对于不对称的丙二烯底物,通常观察到高立体有规加成以得到E-异构体。基于已知的钯和丙二烯化学,提出了一种机理。