TY - JOUR A1 - Moskalik, Mikhail Yu. A1 - Astakhova, Vera V. A1 - Schilde, Uwe A1 - Sterkhova, Irina V. A1 - Shainyan, Bagrat A. T1 - Assembling of 3,6-diazabicyclo[3.1.0]hexane framework in oxidative triflamidation of substituted buta-1,3-dienes JF - Tetrahedron KW - Trifluoromethanesulfonamide KW - Arenesulfonamides KW - Cycloaddition KW - 1,3-Dienes KW - 3,6-Diazabicyclo[3.1.0]hexanes KW - X-ray Y1 - 2014 U6 - https://doi.org/10.1016/j.tet.2014.09.050 SN - 0040-4020 VL - 70 IS - 45 SP - 8636 EP - 8641 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Shainyan, Bagrat A. A1 - Moskalik, Mikhail Yu A1 - Astakhova, Vera V. A1 - Schilde, Uwe T1 - Novel design of 3,8-diazabicyclo[3.2.1]octane framework in oxidative sulfonamidation of 1,5-hexadiene JF - Tetrahedron N2 - 1,5-Hexadiene reacts with trifluoromethanesulfonamide in the oxidative system (t-BuOCl+Nal) to give trans-2,5-bis(iodomethyl)-1-(trifluoromethylsulfonyl)pyrrolidine 5 and 3,8-bis(trifluoromethylsulfonyl)-3,8-diazabicyclo[3.2.1]octane 6. With arenesulfonamides ArSO2NH2 (Ar=Ph, Tol), the reaction stops at the formation of the trans and cis isomers of 2,5-bis(iodomethyl)-1-(arenesulfonyl)pyrrolidine 7 and 8 (1:1). The cis isomers of 7 and 8 do not undergo cyclization to the corresponding 3,8-disubstituted 3,8-diazabicyclo[3.2.1]octanes. The reaction with triflamide represents the first example of one-pot two-step route to 3,8-diazabicyclo[3.2.1]octane system. (C) 2014 Elsevier Ltd. All rights reserved. KW - Trifluoromethanesulfonamide KW - Arenesulfonamides KW - 1,5-Dienes KW - Cycloaddition KW - 3,8-Diazabicyclo[3.2.1]octane KW - X-ray Y1 - 2014 U6 - https://doi.org/10.1016/j.tet.2014.04.095 SN - 0040-4020 VL - 70 IS - 30 SP - 4547 EP - 4551 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Moskalik, Mikhail Yu A1 - Shainyan, Bagrat A. A1 - Astakhova, Vera V. A1 - Schilde, Uwe T1 - Oxidative addition of trifluoromethanesulfonamide to cycloalkadienes JF - Tetrahedron N2 - In the oxidative system (t-BuOCl+NaI) trifluoromethanesulfonamide is regio- and stereoselectively added to only one double bond of cyclopentadiene and 1,3-cyclohexadiene giving rise to 1,1,1-trifluoro-N-(5-iodocyclopent-2-en-1-yl)methanesulfonamide 7 and trans-N,N'-cyclohex-3-en-1,2-diylbis(1,1,1-trifluoromethanesulfonamide) 8. The structure of 7 and 8 was determined by X-ray, NMR, and MS. With 1,4-cyclohexadiene, addition to both double bonds occurs with the formation of N,N'-(4-chloro-5-iodocyclohexan-1,2-diyl)bis(1,1,1-trifluoromethanesulfonamide) 9. Under the action of sodium iodide in acetone, the latter product undergoes halogenophilic attack with the reduction of the CHI group and elimination of HCl to give trans-N,N'-cyclohex-4-en-1,2-diylbis(1,1,1-trifluoromethanesulfonamide) 10, whose structure was also determined by X-ray analysis. 1,3,5-Cycloheptatriene under these conditions is oxidized to benzaldehyde and does not react with trifluoromethanesulfonamide. KW - Trifluoromethanesulfonamide KW - Cyclodienes KW - 1,2-Disulfonamides KW - Allylamides KW - X-ray Y1 - 2013 U6 - https://doi.org/10.1016/j.tet.2012.10.099 SN - 0040-4020 VL - 69 IS - 2 SP - 705 EP - 711 PB - Elsevier CY - Oxford ER -