308335-59-3Relevant academic research and scientific papers
Scandium-catalyzed carbon-carbon bond formations using α- organosulfanyl and organoselanyl-α-fluoroacetic acid derivatives
Gotoh, Kohei,Yamamoto, Teruhisa,Yoshimatsu, Mitsuhiro
, p. 1611 - 1615 (2007/10/03)
The scandium-catalyzed reactions of α-organosulfanyl and organoselanyl-α-fluoroacetates 1-2, acetamides 3-4 and acetonitrile 5 with soft nucleophiles proceeded to give the products 6a-b, 7a-c, 8a-c, 9a-e in good to high yields. We also successfully perfor
First Lewis acid catalyzed generation and reaction of α- organylsulfanyl and α-organylselanyl carbenium ions using ethyl α-fluoroacetate derivatives
Yoshimatsu, Mitsuhiro,Kawamoto, Masayo,Gotoh, Kohei
, p. 2884 - 2887 (2007/10/03)
Lewis acid catalyzed generation and reactions of α-organylsulfanyl and α-organylselanyl carbenium ions with nucleophiles proceeded in high yields using α-fluoro-α-organylsulfanyl- and α-fluoro-α- organylselanylacetate and 5 mol-% scandium triflate. Wiley-
Preparation and oxidation of α-phenylselanyl esters
Lebarillier, Loic,Outurquin, Francis,Paulmier, Claude
, p. 7483 - 7493 (2007/10/03)
Alkylation and selenenylation of selenium-stabilized ester enolates have allowed the preparation of α-phenylselanyl esters 5, 7, 8 and of α,α-bis(phenylselanyl)esters 6, respectively. The competitive selenophilic reaction, leading to an allylic phenylselenide 9, was avoided in the presence of HMPA. α-phenylselanyl α,β-unsaturated esters 15 were prepared by oxidation of compounds 6 and dehydrohalogenation of β-chloroesters 17. Some other transformations: oxidation, transesterification and Grignard reaction were also studied. H2O2 oxidation of Z-esters 15 has led to stable E-α-seleninyl esters 20. (C) 2000 Elsevier Science Ltd.
