A mild, practical, and simple procedure for phenyl selenoesters synthesisfrom several anhydrides and diphenyl diselenide was developed. This transition-metal-free method provides a straightforward entry to storable Fmoc-amino acid selenoesters which are effective chemoselective acylating reagents. An application to oligopeptide synthesis was illustrated.
Synthesis of selenol esters from diorganyl diselenides and acyl chlorides under solvent-free conditions and microwave irradiation
作者:Marcelo Godoi、Eduardo W. Ricardo、Giancarlo V. Botteselle、Fabio Z. Galetto、Juliano B. Azeredo、Antonio L. Braga
DOI:10.1039/c1gc16243h
日期:——
Herein, we report an efficient, quick and eco-friendly new method for the synthesis of a variety of selenol esters. This novel solvent-free methodology gave good to excellent isolated yields of desired products after just 2 min undermicrowave irradiation. Furthermore, by using the same green approach, we were also able to synthesize selenocarbonates bearing interesting functionalities.
Herein, we report an eco-friendly synthesis of selenoesters from acyl chlorides catalyzed by recyclable CuO nanopowder in ionic liquid as a recyclable solvent in good to excellent yields. This protocol shows high efficiency in catalyzing this transformation in a greener fashion than previous protocols due to the non-residual methodological design.
Efficient synthesis of selenol esters from acid chlorides mediated by indium metal
作者:Graciane Marin、Antonio L. Braga、Anderson S. Rosa、Fábio Z. Galetto、Robert A. Burrow、Hugo Gallardo、Marcio W. Paixão
DOI:10.1016/j.tet.2009.03.069
日期:2009.6
This article describes an efficient and easy one-pot route for the synthesis of a wide range of selenol estersfrom acyl chloride with diselenides in the presence of indium metal. A variety of functional groups can be tolerated within the diorgano diselenide and the acyl chloride coupling partner.
Facile Formation of Samarium (III) Selenolates From Potassium Iodide Catalyzed Reaction of Samarium Metal and Diselenides, and Their Application in Synthesis of Selenoesters
作者:Genliang Lu、Yongmin Zhang
DOI:10.1080/00397919908085760
日期:1999.1
Abstract Samarium metal reacts with diselenides in the presence of a catalytic amount of potassiumiodide to generate samarium(II1) selenolates. Samarium (111) selenolates thus formed in situ, react with acid chlorides to give selenoesters in moderate yields.