Styrene derivatives reacted with diphenyl(trifluoromethanesulfonyloxy)sulfonium trifluoromethanesulfonate (1) at low temperature to afford 2-arylethenyl(diphenyl)sulfonium triflates (2). Treatment of 2 with primary amines gave the corresponding 2-arylaziridines in high yields. One-pot synthesis of various aziridines was also successfully carried out without isolation of the intermediate 2.
Direct conversion of epoxides to aziridines was achieved with guanidines as a nitrogen source. Stereochemical inversion at the chiral centers of epoxides was observed without loss of optical purity.
One-pot synthesis of aziridines from vinyl selenones and variously functionalized primary amines
作者:Silvia Sternativo、Francesca Marini、Francesca Del Verme、Antonella Calandriello、Lorenzo Testaferri、Marcello Tiecco
DOI:10.1016/j.tet.2010.06.055
日期:2010.8
Variously substituted aziridines were conveniently prepared by an aza-Michael Initiated Ring Closure (aza-MIRC) reaction starting from vinyl selenones and primary amines, aminoalcohols or diamines. The reactions proceed in very high yields at room temperature in toluene or water. A significant rate acceleration was observed under aqueous conditions.
Three-component reaction of small-ring cyclic amines with arynes and acetonitrile
作者:David Stephens、Yu Zhang、Mathew Cormier、Gabriel Chavez、Hadi Arman、Oleg V. Larionov
DOI:10.1039/c3cc42854k
日期:——
A novel stereospecific three-component reaction of aziridines and azetidines with arynes and acetonitrile has been developed. The reaction affords N-aryl γ-aminobutyronitriles and δ-aminovaleronitriles that can be used as precursors and congeners of a number of bioactive compounds, such as pregabalin and lergotrile.
B−N Coordinated Phenanthroimidazole‐Based Zinc‐Salen as a Photocatalyst for the Synthesis of Oxazolidinones using Carbon Dioxide as a C1 Source under Mild Reaction Conditions
Cycloaddition of carbondioxide (CO2) with aziridine catalyzed by a zinc-salen having B−Ncoordinatedphenanthroimidazole motif as a photocatalyst (1), at 1 bar CO2 pressure and room temperature under solvent free condition is presented. The photocatalyst exhibited excellent selectivity and tolerates a variety of substituted aziridines, and successfully produces the corresponding oxazolidinones at mild conditions
提出了在 1 bar CO 2压力和室温下无溶剂条件下,二氧化碳 (CO 2 ) 与氮丙啶的环加成反应,该反应由具有 B−N 配位菲并咪唑基序的锌-salen 作为光催化剂 ( 1 )催化。该光催化剂表现出优异的选择性并耐受多种取代的氮丙啶,并在温和条件下成功地生产出相应的恶唑烷酮。