Palladium-Catalyzed Hydrocarbonylative C–N Coupling of Alkenes with Amides
作者:Xibing Zhou、Guoying Zhang、Bao Gao、Hanmin Huang
DOI:10.1021/acs.orglett.8b00538
日期:2018.4.20
An efficient palladium-catalyzed hydrocarbonylative C–N coupling of alkenes with amides has been developed. The reaction was performed via hydrocarbonylation of alkenes, followed by acyl metathesis with amides. Both intermolecular and intramolecular reactions proceed smoothly to give either branched or linear amides in high turnover number (3500) with NH4Cl or NMP·HCl as a proton source under the palladium
Palladium(II)-Catalyzed Allylic CH Oxidation of Hindered Substrates Featuring Tunable Selectivity Over Extent of Oxidation
作者:Xiangyou Xing、Nicholas R. O'Connor、Brian M. Stoltz
DOI:10.1002/anie.201504007
日期:2015.9.14
use of Oxone and a palladium(II) catalyst enables the efficient allylic CHoxidation of sterically hindered α‐quaternary lactams which are unreactive under known conditions for similar transformations. This simple, safe, and effective system for CH activation allows for unusual tunable selectivity between a two‐electron oxidation to the allylic acetates and a four‐electron oxidation to the corresponding
Azide–Enolate Cycloaddition‐Rearrangement Enables Direct α‐Amination of Amides and Enelactam Synthesis from Esters**
作者:Joseph J. Bell‐Tyrer、Paul A. Hume、Phillip S. Grant、Margaret A. Brimble、Daniel P. Furkert
DOI:10.1002/chem.202300261
日期:——
Diverse frameworks via cycloaddition-rearrangement: Azide-enolate cycloaddition-rearrangements were applied to the direct α-amination of amides and lactams, and synthesis of ene-γ-lactams fromesters. The outcome of the reaction varied by substrate, depending on the fate of triazoline intermediates generated in the cycloaddition. These processes form part of a wider cycloaddition-rearrangement reaction