Cooperative Titanocene and Phosphine Catalysis: Accelerated C–X Activation for the Generation of Reactive Organometallics
作者:Lauren M. Fleury、Andrew D. Kosal、James T. Masters、Brandon L. Ashfeld
DOI:10.1021/jo301726v
日期:2013.1.18
transmetalation approach toward the generation of Grignard and organozinc reagents mediated by a titanocene catalyst. This method enables the metalation of functionalized substrates without loss of functional group compatibility. Allyl zinc reagents and allyl, vinyl, and alkyl Grignard reagents were generated in situ and used in the addition to carbonyl substrates to provide the corresponding carbinols in yields
Visible-Light-Mediated Synthesis of Oxidized Amides via Organic Photoredox Catalysis
作者:Ting Wang、Yuliu Du、Zheng Wei
DOI:10.1055/s-0036-1591988
日期:2018.9
Applications in Synthesis Abstract The development of visible-light-mediatedsynthesis of oxidized amides is reported. The reaction shows a broad substrate scope and highlights a mild nature of the reaction conditions. A range of functional groups are well tolerated in the reaction. Relying on the strategy, a variety of α-alkoxy amino acids are synthesized. The development of visible-light-mediated synthesis
Highly Enantioselective Synthesis of Functionalized Glutarimide Using Oxidative N-Heterocyclic Carbene Catalysis: A Formal Synthesis of (−)-Paroxetine
作者:Arka Porey、Surojit Santra、Joyram Guin
DOI:10.1021/acs.joc.9b00320
日期:2019.5.3
yet highly effective approach toward enantioselective synthesis of trans-3,4-disubstituted glutarimides from readily available starting materials is developed using oxidative N-heterocyclic carbene catalysis. The catalytic reaction involves a formal [3 + 3] annulation between enals and substituted malonamides enabling the production of glutarimide derivatives in a single chemical operation via concomitant
Formal Aza‐Wacker Cyclization by Tandem Electrochemical Oxidation and Copper Catalysis
作者:Xiangli Yi、Xile Hu
DOI:10.1002/anie.201814509
日期:2019.3.26
In oxidative electrochemical organic synthesis, radical intermediates are often oxidized to cations on the way to final product formation. Herein, we describe an approach to transform electrochemically generated organic radical intermediates into neutral products by reaction with a metalcatalyst. This approach combines electrochemical oxidation with Cu catalysis to effect formal aza‐Wacker cyclization
Catalytic Asymmetric Allylic Substitution with Copper(I) Homoenolates Generated from Cyclopropanols
作者:Qi Zhang、Si‐Wei Zhou、Chang‐Yun Shi、Liang Yin
DOI:10.1002/anie.202110709
日期:2021.12.6
A catalytic asymmetricallylicsubstitution with NHC-stabilized copper(I) homoenolates generated from cyclopropanols is developed that affords γ-chiral ketones in excellent regio- and high enantioselectivities. This process enables the generation of chiral quaternary carbon centers and features a broad substrate scope.