Polarity-Reversed Allylations of Aldehydes, Ketones, and Imines Enabled by Hantzsch Ester in Photoredox Catalysis
作者:Li Qi、Yiyun Chen
DOI:10.1002/anie.201607813
日期:2016.10.10
polarity reversal (umpolung) reaction is an invaluable tool for reversing the chemical reactivity of carbonyl and iminyl groups, which subsequent cross‐couplingreactions to form C−C bonds offers a unique perspective in synthetic planning and implementation. Reported herein is the first visible‐light‐induced polarity‐reversed allylation and intermolecular Michael addition reaction of aldehydes, ketones
Molecular iodine-catalyzed one-pot synthesis of substituted quinolines from imines and aldehydes
作者:Xu-Feng Lin、Sun-Liang Cui、Yan-Guang Wang
DOI:10.1016/j.tetlet.2006.02.136
日期:2006.5
A mild, efficient, and general method for the synthesis of substitutedquinolines via a molecular iodine-catalyzed one-pot domino reaction of imines with enolizable aldehydes has been described.
Microwave-assisted diastereoselective two-step three-component synthesis for rapid access to drug-like libraries of substituted 3-amino-β-lactams
作者:Guido V. Janssen、Joyce A.C. van den Heuvel、Rik P. Megens、Jorg C.J. Benningshof、Huib Ovaa
DOI:10.1016/j.bmc.2017.11.014
日期:2018.1
a robust microwave-assisted synthesis for the diastereoselective generation of 3-saccharinyl-trans-β-lactams is reported. The method is optimised for combinatorial library synthesis in which decoration of the scaffold is varied on both the β-lactam and the saccharine moiety. Within the European Lead Factory (ELF) consortium, a library of 263 compounds was efficiently produced using the developed methodology
The first catalytic inverse hydroboration of imines with N‐heterocyclic carbene (NHC) boranes has been realized by means of cooperative organocatalysis and photocatalysis. This catalytic combination provides a promising platform for promoting NHC‐boryl radical chemistry under sustainable and radical‐initiator‐free conditions. The highly important functional‐group compatibility and possible application
Preventing Pd–NHC bond cleavage and switching from nano-scale to molecular catalytic systems: amines and temperature as catalyst activators
作者:Oleg V. Khazipov、Maxim A. Shevchenko、Dmitry V. Pasyukov、Andrey Yu. Chernenko、Alexander V. Astakhov、Victor A. Tafeenko、Victor M. Chernyshev、Valentine P. Ananikov
DOI:10.1039/c9cy02041a
日期:——
Reactions of Pd/NHC complexes with various amines within a temperature range of 25–140 °C and thermalstability of the resulting amino-complexes are examined. The results indicate the major influence of the amine structure and reaction temperature on the catalyst transformation. In particular, thermal decomposition of Pd/NHC complexes with aliphatic amine ligands predominantly leads to reductive Pd–NHC