Polystyrene-supported TBD catalyzed ring-opening of N-tosylaziridines with silylated nucleophiles
作者:Satoru Matsukawa、Takeru Harada、Shiori Yasuda
DOI:10.1039/c2ob25435b
日期:——
Polystyrene-supported TBD (PS-TBD) catalyzes the ring-opening of N-tosylaziridines with silylated nucleophiles to give the corresponding products in high yields. PS-TBD was easily recovered and reused without significant loss of catalytic activity.
TBD-Catalyzed Ring Opening of Aziridines with Silylated Nucleophiles
作者:S. Matsukawa、H. Takahashi、T. Harada
DOI:10.1080/00397911.2011.601839
日期:2013.1
Abstract The ringopening of N-tosylaziridines with silylatednucleophiles catalyzed by 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) afforded the corresponding β-functionalized sulfonamides in excellent yields under mild reaction conditions. GRAPHICAL ABSTRACT
Regio- and Stereoselective Ring Opening of Epoxides and Aziridines Using Zirconyl Chloride: An Efficient Approach for the Synthesis of β-Chlorohydrins and β-Chloroamines
Zirconyl chloride mediated regio- and stereoselective ring opening of epoxides and aziridines at room temperature affords the corresponding β-chlorohydrins and β-chloroamines, respectively in high yields.
Indium Trihalide Mediated Regioselective Ring Opening of Aziridines: A Facile Synthesis of 2-Haloamines
作者:J. S. Yadav、B. V. Subba Reddy、G. Mahesh Kumar
DOI:10.1055/s-2001-16775
日期:——
A variety of N-tosyl aziridines undergo ringopening with indium trihalides in acetonitrile at ambient temperature to afford the corresponding haloamines in excellent yields with high regioselectivity.
Efficient regio- and stereo-selective cleavage of aziridines and epoxides using an ionic liquid as reagent and reaction medium
作者:Brindaban C Ranu、Laksmikanta Adak、Subhash Banerjee
DOI:10.1139/v07-040
日期:2007.5.1
containing a variety of functionalities such as halo, azido, and thiocyano, efficiently cleave aziridines and epoxides to the corresponding products in high yields. The cleavages are regio- and stereo-selective. The reactions are complete in 1 h at 60 °C and do not require any other catalyst or organic solvent. Thus, a convenient synthetic route to 1,2-haloamines, 1,2-azidoamines, 1,2-thiocyanoamines,
离子液体含有多种官能团,如卤素、叠氮基和硫氰基,能以高产率有效地将氮丙啶和环氧化物裂解成相应的产物。裂解是区域和立体选择性的。反应在 60 °C 下 1 小时内完成,不需要任何其他催化剂或有机溶剂。因此,开发了一条合成 1,2-卤胺、1,2-叠氮胺、1,2-硫氰胺、1,2-叠氮醇和 1,2-硫氰醇的简便合成路线。裂解、区域选择性、立体选择性