Superbase-Catalyzed anti-Markovnikov Alcohol Addition Reactions to Aryl Alkenes
作者:Chaosheng Luo、Jeffrey S. Bandar
DOI:10.1021/jacs.8b00766
日期:2018.3.14
direct anti-Markovnikov addition of alcohols to aryl alkenes to access valuable β-phenethyl ethers. A diverse substrate scope of aryl alkenes and alcohols is demonstrated, including heterocyclic systems and unprotected aminoalcohols. Mechanistic studies reveal that the reaction is under equilibrium control and extensive comparisons to common inorganic bases indicate that the broad reaction scope is
A range of medium-sized cyclic ethers (5 to 11 membered) have been effectively synthesized through intramolecular reductive coupling of dialdehydes initiated by 50 ppm to 0.5% of AgNTf2 with hydrosilane at 25 °C. The catalytic system is also suitable for the coupling of two different monoaldehydes to provide unsymmetrical ethers. This protocol features broad functional group compatibility, high product
A hemilabile NHC‐gold complex and its application to the redox neutral 1,2‐oxyarylation of feedstock alkenes
作者:Samuel C. Scott、Jamie A. Cadge、Grace Boden、John Bower、Christopher A. Russell
DOI:10.1002/anie.202301526
日期:——
A hemi-labile (C^N) N-heterocyclic carbene ligand mediates oxidative addition of aryl iodides to a AuI center. The oxidative addition process has been studied and analyzed computationally. This process allows the first examples of “exogenous oxidant-free” AuI/AuIII catalyzed 1,2-oxyarylations of ethylene and propylene.
半不稳定 (C^N) N-杂环卡宾配体介导芳基碘化物与 Au I中心的氧化加成。对氧化加成过程进行了研究和计算分析。该过程实现了“无外源氧化剂”Au I /Au III催化乙烯和丙烯 1,2-氧基芳基化的第一个例子。