Tri- and tetrasubstituted N–H pyrroles were prepared by the simple treatment of vinyl azides with 1,3-dicarbonylcompounds in toluene at 100 °C via 2H-azirine intermediates generated in situ. When the reactions of vinyl azides and 1,3-dicarbonylcompounds were performed in DMF in the presence of a catalytic amount of K2CO3, 1-vinyl-1,2,3-triazoles were obtained via 1,3-dipolar cycloaddition. These
三-和四取代Ñ经由2在100℃下在甲苯中的简单处理乙烯基叠氮化物与1,3-二羰基化合物制备-H吡咯ħ原位产生-azirine中间体。当在催化量的K 2 CO 3存在下,叠氮化乙烯和1,3-二羰基化合物的反应在DMF中进行时,通过1,3-偶极环加成反应获得1-乙烯基-1,2,3-三唑。这些方法利用了叠氮化乙烯基化学反应的正交模式,这可以通过稍微改变反应条件来实现。
Mn(III)-Mediated Reactions of Cyclopropanols with Vinyl Azides: Synthesis of Pyridine and 2-Azabicyclo[3.3.1]non-2-en-1-ol Derivatives
作者:Yi-Feng Wang、Shunsuke Chiba
DOI:10.1021/ja905110c
日期:2009.9.9
to the formation of 2-azabicyclo[3.3.1]non-2-en-1-ol derivatives using a catalytic amount of Mn(acac)(3). These reactions may be initiated by a radicaladdition of beta-keto radicals, generated by the one-electron oxidation of cyclopropanols, to vinyl azides to give iminyl radicals, which would cyclize with the intramolecular carbonyl groups. In addition, versatile transformations of 2-azabicyclo[3.3
The reaction of vinyl azides with sulfoxonium ylids. Synthesis of n-vinyl triazolines and vinyl aziridines.
作者:Alfred Hassner、Benjamin A. Belinka、Mark Haber、Paul Hunger
DOI:10.1016/s0040-4039(01)90462-9
日期:1981.1
Vinyl azides react with dimethylsulfoxonium ylid at the azide function to produce in high yield 1-vinyl-4,5-unsubstituted-Δ-1,2-1,2,3-triazolines . Vacuumflashpyrolysis of furnished N-vinylaziridines without formation of pyrolines.