A Mild and Clean Method for
Oxidative Formation of Amides from Aldehydes and Amines
作者:Weixing Qian、Weiliang Bao、Chen Fang
DOI:10.1055/s-2008-1078218
日期:——
A metal-free direct oxidative formation of amides from aldehydes and amines using a hypervalentiodine(III) reagent or an ion-supported hypervalentiodine(III) reagent as a recyclable oxidant under mild conditions is reported.
A New Strategy for Preparing Molecular Imaging and Therapy Agents Using Fluorine-Rich (Fluorous) Soluble Supports
作者:Amanda Donovan、Jane Forbes、Peter Dorff、Paul Schaffer、John Babich、John F. Valliant
DOI:10.1021/ja0600375
日期:2006.3.1
convenient new strategy for producing radiolabeled compounds in high effective specific activity was developed usingsoluble fluorous supports. The reported methodology involves a fluorous linker group that is released from the substrate of interest upon reaction with radioiodine. The desired product can then be selectively separated from unreacted starting material and reaction byproducts using a simple
The first platinum-catalyzed selective silylation of aryl halides including aryl iodides and bromides having an electron-withdrawing group is described. The reaction takes place rapidly in NMP with triethylsilane as a silicon source and sodium acetate to provide functionalized aryltriethylsilanes in moderate to good yields. Heteroaromatic halides also were found to be readily silylated with triethylsilane. The procedure is chemoselective and tolerates a wide variety of functional groups.
Aromatic substituted amidines
申请人:STERLING DRUG INC.
公开号:US03850909A1
公开(公告)日:1974-11-26
Cu-Catalyzed N-Arylation of Oxazolidinones: An Efficient Synthesis of the κ-Opioid Receptor Agonist CJ-15161
作者:Arun Ghosh、Janice E. Sieser、Stéphane Caron、Michel Couturier、Kristina Dupont-Gaudet、Melina Girardin
DOI:10.1021/jo052060z
日期:2006.2.1
An efficient method for intermolecular N-arylation of oxazolidinones using catalytic copper in the presence of a bidentate ligand is reported. The conditions allow the use of copper and can be used to prepare enantiopure N-aryl beta-amino alcohols. A short, scalable synthesis of CJ-15,161 is also reported. The required amines were obtained from the precursor alpha-amino acids or, more conveniently, from the corresponding 1,2-amino alcohols.