Photochemically-induced C–C bond formation between tertiary amines and nitrones
作者:Kennosuke Itoh、Ryo Kato、Daito Kinugawa、Hideaki Kamiya、Ryuki Kudo、Masayuki Hasegawa、Hideaki Fujii、Hiroyuki Suga
DOI:10.1039/c5ob01277e
日期:——
organophotosensitizer and photoirradiation was highly effective in accelerating addition reactions. Several nitrones and tertiary amines were successfully utilized to give β-amino hydroxylamines in good yield. Highly regioselective generation of primary α-aminoalkyl radicals based on Lewis's stereoelectronic rule and diastereoselective addition reactions of primary α-aminoalkyl radicals with nitrones were successfully
Selective Oxidation of N-Alkyl Imines to Oxaziridines using UHP/Maleic Anhydride system
作者:Jafar Asgarian Damavandi、Bahador Karami、Mohammad Ali Zolfigol
DOI:10.1055/s-2002-31903
日期:——
Several structurally differentiated N-alkyl imines were oxidized to their corresponding oxaziridines using UHP/maleic anhydride system. Oxidation reaction was performed under mild conditions and oxaziridines were obtained in good to excellent yields.
with urea–hydrogen peroxide using iron(III) and manganese (III)- tetraphenylporphyrins [Fe(TPP)Cl], [Mn(TPP)Cl] and manganese (III)-octabromotetraphenyl porphyrin [Mn(TPPBr8)Cl] as catalysts. Experimental results showed the released urea from UHP acts as an axial ligand. These catalysts showed high selectivity in oxidation of imines to corresponding nitrones and oxaziridines at 0°C to room temperature
Stereochemistry of the Addition of Lithiated Methyl Phenyl Sulfoxide to Oxaziridines
作者:A. R. Hajipour
DOI:10.1080/00397919608003775
日期:1996.10
Abstract The stereochemical outcome and diastereoselectivity of the reaction of lithiated methyl phenyl sulfoxide with oxaziridine are reported. The relative stereochemistry of the major diastereomeric products was determined by chemical correlation with the major diastereomeric products from the reaction of lithiated racemic methyl phenyl sulfoxide with nitrones.
Visible-Light-Promoted Synthesis of Vinyloxaziridines from Conjugated Carbonyls
作者:Gustavo Moura-Letts、Brooke E. Austin、Ryan P. Palner、Elissa M. Tobias、Rufai Madiu、Erin L. Doran、Jenna M. Doran、Amari M. Howard、James L. Stroud、Morgan E. Rossi、Dylan A. Moskovitz、Dominic A. Rivera、Michael D. Mullen、Amy H. Zinsky、Rose A. Rosario
DOI:10.1055/a-2153-6687
日期:2024.2
We report the first visible-light-promoted synthesis of vinyloxaziridines from simple conjugated nitrones. We have found that vinyl nitrones formed by the condensation reaction between conjugated carbonyls and hydroxylamines undergo visible-light-promoted energy-transfer isomerization to the respective vinyloxaziridines in very high yields and selectivities. The reaction scope expands to a large array