2024-03-29T11:24:32Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/322912022-11-17T02:08:08Zhdl_2115_20044hdl_2115_124Enantioselective amination of silylketene acetals with (N-arylsulfonylimino)phenyliodinanes catalyzed by chiral dirhodium(II) carboxylates: asymmetric synthesis of phenylglycine derivativesTanaka, MasahikoKurosaki, YasunobuWashio, TakuyaAnada, MasahiroHashimoto, Shunichi431The first catalytic enantioselective amination of silylketene acetals with (N-arylsulfonylimino) phenyliodinanes is described. The reaction of silylketene acetals derived from methyl phenylacetates with [N-(2-nitrophenylsulfonyl)imino] phenyliodinane (NsN = IPh) under the catalysis of dirhodium(II) tetrakis[N-tetrachlorophthaloyl-(S)-tert-leucinate], Rh_{2}(S-TCPTTL)_{4}, proceeds in benzene at room temperature to give N-(2-nitrophenylsulfonyl) phenylglycine derivatives in high yields and with enantioselectivities of up to 99% ee.ElsevierJournal Articleapplication/pdfhttp://hdl.handle.net/2115/32291https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/32291/1/TL0709-509-1.pdf0040-4039Tetrahedron Letters4850879988022007-12-10enginfo:doi/10.1016/j.tetlet.2007.10.087author