一种钯 NNC-钳形配合物：一种用于十亿分之一级烯丙基芳基化的高效催化剂。
A palladium NNC-pincer complex: an efficient catalyst for allylic arylation at parts per billion levels.
作者信息
Hamasaka Go, Sakurai Fumie, Uozumi Yasuhiro
机构信息
Institute for Molecular Science, Okazaki 444-8787, Japan.
出版信息
Chem Commun (Camb). 2015 Mar 4;51(18):3886-8. doi: 10.1039/c4cc09726b.
PMID:25656282
Abstract
Allylic arylation of allylic acetates by sodium tetraarylborates in the presence of ppb to ppm (molar) loadings of a palladium NNC-pincer complex catalyst in methanol at 50 °C gave the corresponding arylated products in excellent yields. Total turnover numbers of up to 500,000,000 and turnover frequencies of up to 11,250,000 h(-1) were achieved.
摘要
在50℃的甲醇中，在百万分之一至百万分之几（摩尔）负载量的钯NNC钳形配合物催化剂存在下，四芳基硼酸钠使烯丙基乙酸酯发生烯丙基芳基化反应，以优异的产率得到相应的芳基化产物。实现了高达5亿的总周转数和高达1.125×10⁷ h⁻¹的周转频率。
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