Multifaceted palladium catalysts towards the tandem diboration-arylation reactions of alkenes.
Multifaceted palladium catalysts towards the tandem diboration-arylation reactions of alkenes.
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用于烯烃串联二硼化-芳基化反应的多面钯催化剂。
DOI：
10.1002/chem.200800931
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
E. Fernández
中科院分区：
文献类型：
--
作者：
Dirk Penno;Vanesa Lillo;I. Koshevoy;M. Sanaú;M. Úbeda;P. Lahuerta;E. Fernández
以高产率合成了新型Pd（2）（6+）配合物。这些化合物和它们的Pd（2）（4+）对应物作为合成前体介导了乙烯基芳烃和脂肪族1-烯烃的二硼化反应，并且在温和和碱性的反应条件下，它们以优异的转化率和化学选择性生成各种1，2-二硼酸酯。双（邻苯二酚合）二硼（B（2）cat（2））的存在有利于Pd（III）还原成Pd（II），而Pd（II）的催化前体转化成Pd（0）-纳米颗粒。设计了一种“原位”催化串联反应，将二硼酸酯中间体转化为单芳基化产物，其在氧化后处理后提供羟基化加合物。最终，相同的催化剂进行两个序列，从烯烃完全转化。
Novel Pd(2) (6+) compounds have been synthesized in high yield. These compounds and their Pd(2) (4+) counterparts as synthetic precursors mediate the diboration of vinylarenes and aliphatic 1-alkenes, and under mild and basic reaction conditions they produce a variety of 1,2-diboronate esters with excellent conversions and chemoselectivities. The presence of bis(catecholato)diboron (B(2)cat(2)) favours the reduction of Pd(III) to Pd(II), while the catalytic precursor of Pd(II) is transformed into Pd(0)-nanoparticles. An "in situ" catalytic tandem reaction has been designed to transform the diboronate intermediates into the monoarylated product, which after oxidative workup, provides the carbohydroxylated adduct. Eventually, the same catalyst performs both sequences with total conversion from the alkene.
影响因子：
15
作者：
Pelz, NF;Woodward, AR;Morken, JP
通讯作者：
Morken, JP
影响因子：
5.2
作者：
Miller, SP;Morgan, JB;Morken, JP
通讯作者：
Morken, JP