Palladium/Norbornene-Catalyzed Ortho-Acylation and Ipso-Selenation via C(O)–Se Bond Cleavage: Synthesis of α-Carbonyl Selane
摘要:
A palladium/norbornene-catalyzed synthetic method that combines selective ortho C-H bond activation with sequential reactions to form complex selenide compounds has been developed. The C(O)-Se bond in selenoates is successfully cleaved, and various kinds of alpha-carbonyl selanes were synthesized in decent to excellent yields. The reaction has good functional group tolerance and broad substrate scope.
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.
Green synthesis and antibacterial activity of chalcogenoesters
作者:Rafael S. da Silva、Guerino B. Junior、Letiére C. Soares、Fernanda H. da Rosa、Bruno B. Ravanello、Luciano Dornelles、Victor dos S. Barboza、Rodrigo de A. Vaucher、Roberto C. V. Santos、Bernardo Baldisserotto、Oscar E. D. Rodrigues
DOI:10.1007/s00706-020-02565-x
日期:2020.3
methodology for the synthesis of chalcogenoester in good-to-excellent yields in a short time, with an easy work-up/purification step, and in a greenest methodology, affording the minimum generation of solid and liquid waste, in comparison to that described in the literature. Additionally, some selected compounds were evaluated as antimicrobial agents, showing moderate activity against a variety of
Iron-Catalyzed Synthesis of Selenoesters from Diselenides and Acyl Chlorides or Acid Anhydrides in the Presence of Magnesium Dust
作者:Lei Wang、Kai Ren、Min Wang、Ping Liu
DOI:10.1055/s-0029-1219229
日期:2010.4
for the iron-catalyzed preparation of selenoesters by the reaction of diselenides with acylchlorides or acid anhydrides has been developed. In the presence of magnesium dust, iron catalyzes the cleavage of the Se-Se bonds of the diselenides; the subsequent smooth reaction with acylchlorides or acid anhydrides generates the corresponding selenoesters in good yields. The reaction could be carried out