[(NHC)Au<sup>I</sup>]-Catalyzed Rearrangement of Allylic Acetates
作者:Nicolas Marion、Ronan Gealageas、Steven P. Nolan
DOI:10.1021/ol070843w
日期:2007.7.1
[(NHC)AuCl] complexes (NHC = N-heterocycliccarbene), in conjunction with a silver salt, were found to efficiently catalyze the rearrangement of allylic acetates under both conventional and microwave-assisted heating. The optimization of several reaction parameters (solvent, silver salt, and ligand) as well as a study of the reaction scope are reported. The steric hindrance of the ligand bound to gold was
Metal-free allylic C–H nitrogenation, oxygenation, and carbonation of alkenes by thianthrenation
作者:Ming-Shang Liu、Hai-Wu Du、Wei Shu
DOI:10.1039/d1sc06577g
日期:——
functionalization of allylic C–H bonds into other chemical bonds is among the most straightforward and attractive, yet challenging transformations. Herein, a transition-metal-free protocol for direct allylic C–H nitrogenation, oxygenation, and carbonation of alkenes by thianthrenation was developed. This operationally simple protocol allows for the unified allylic C–Hamination, esterification, etherification
Sol-Gel Immobilized N-Heterocyclic Carbene Gold Complex as a Recyclable Catalyst for the Rearrangement of Allylic Esters and the Cycloisomerization of γ-Alkynoic Acids
作者:Meritxell Ferré、Xavier Cattoën、Michel Wong Chi Man、Roser Pleixats
DOI:10.1002/cctc.201600632
日期:2016.9.7
The synthesis of a bis‐silylated (NHC)AuCl (NHC=N‐heterocycliccarbene) complex and the formation of a hybrid silica material by the sol–gel process by cogelification with tetraethylorthosilicate under fluoride catalysis are described. This material was characterized by using 29Si solid‐state NMR spectroscopy, N2 sorption measurements, electron microscopy, and elemental analysis. It was tested as a
New Complexes of Ruthenium, Method for Their Preparation, and Their Application in Olefin Metathesis Reactions
申请人:Grela Karol
公开号:US20140171607A1
公开(公告)日:2014-06-19
The present invention provides new ruthenium complexes of Formula (1), which contain a chelate ring created by a halogen atom X. The invention concerns also a method for the preparation of the new ruthenium complexes and their application in metathesis reactions.
Manganese(I) Catalyzed ortho C–H Allylation of Benzoic Acids
作者:Jonas Felix Goebel、Johanna Stemmer、Florian Belitz、Lukas J Goossen
DOI:10.1002/anie.202301839
日期:——
A simple manganese catalyst sets new standards in the ortho-C−H allylation of benzoates, by allowing nearly complete selectivity for mono- over competing di-allylation. The reaction can be combined with an in situ decarboxylation, giving access to allylarenes in substitution patterns that are otherwise hard to obtain. The scope of the protocol is demonstrated by 44 diverse examples.