Ionic liquid-mediated synthesis of (1H-1,2,3-triazol-1-yl)furoxans by [3 + 2] cycloaddition of azidofuroxans to acetylenes
摘要:
The [3 + 2] cycloaddition of azidofuroxans to internal and terminal acetylenes was found to occur only in ionic liquids on heating and afford (1H-1,2,3-triazol-1-yl)furoxans in moderate to good yields. The reaction with terminal acetylenes proceeds with high regio-selectivity.
Dinitrogen Trioxide-Mediated Domino Process for the Regioselective Construction of 4-Nitrofuroxans from Acrylic Acids
作者:Leonid L. Fershtat、Marina I. Struchkova、Alexander S. Goloveshkin、Ivan S. Bushmarinov、Nina N. Makhova
DOI:10.1002/hc.21166
日期:2014.7
4-Nitrofuroxans (4-nitro-1,2,5-oxadiazole 2-oxides) were prepared by a dinitrogentrioxide–mediateddomino reaction of acrylicacids under the action of NaNO2 excess in AcOH at room temperature. The reaction proceeds completely regioselectively and presents a new, simple, general, and safe method for the preparation of both 3-aryl- and 3-alkyl-4-nitrofuroxans available with difficulty before. A mechanism
Ionic liquid-mediated synthesis of (1H-1,2,3-triazol-1-yl)furoxans by [3 + 2] cycloaddition of azidofuroxans to acetylenes
作者:Leonid L. Fershtat、Salavat S. Ashirbaev、Alexander S. Kulikov、Vadim V. Kachala、Nina N. Makhova
DOI:10.1016/j.mencom.2015.07.007
日期:2015.7
The [3 + 2] cycloaddition of azidofuroxans to internal and terminal acetylenes was found to occur only in ionic liquids on heating and afford (1H-1,2,3-triazol-1-yl)furoxans in moderate to good yields. The reaction with terminal acetylenes proceeds with high regio-selectivity.