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.
Indium-mediated cleavage of diphenyl diselenide and diphenyl disulfide: efficient one-pot synthesis of unsymmetrical diorganyl selenides, sulfides, and selenoesters
作者:Wanida Munbunjong、Eun Hwa Lee、Poonlarp Ngernmaneerat、Sung Jun Kim、Gurpinder Singh、Warinthorn Chavasiri、Doo Ok Jang
DOI:10.1016/j.tet.2009.01.072
日期:2009.3
convenient and efficient method was developed for the synthesis of alkyl phenyl selenides, sulfides, and selenoesters in one-pot reaction by using indium metal. The reaction showed the selectivity for tert-alkyl, benzylic, and allylic halides over primary and secondary alkyl halides. For the reaction of primary and secondary alkyl iodides and bromides, the yields of selenides were improved by the addition
Highly Stereoselective Synthesis of Tetrasubstituted Vinyl Selenides via Rhodium-Catalyzed [1,4]-Acyl Migration of Selenoesters and Diazo Compounds
作者:Xun-Shen Liu、Mingjia Li、Kexin Dong、Shaoting Peng、Lu Liu
DOI:10.1021/acs.orglett.2c00477
日期:2022.3.25
disclose a highly stereoselective Rh(II)-catalyzed 1,4-acyl rearrangement of selenium esters and α-diazo carbonyl compounds, which provides an efficient method for synthesizing tetrasubstituted vinyl selenides. Furthermore, this reaction also offers a synthetic tool for medium and large ring compounds.
1,3‐Difunctionalization of Imino‐Carbenes via Rhodium‐Catalyzed Reactions of Triazoles with Acyl Selenides
作者:Fang Li、Chao Pei、Calogero Quaranta、Rene M. Koenigs
DOI:10.1002/adsc.202100629
日期:2021.9.21
rhodium-catalyzed reaction of triazoles with acyl selenides. Under thermal reaction conditions and in the presence of a rhodium catalyst, a rapid 1,3-difunctionalization reaction occurs to provide valuable α-seleno enamides with high stereoselectivity and broad functional group tolerance, which was demonstrated in 35 examples with up to 95% yield. Computational calculations suggest a reaction pathway that