Isolation of nitrile oxides from the thermal fragmentation of furazan -oxides
作者:William R. Mitchell、R.Michael Paton
DOI:10.1016/s0040-4039(01)86315-2
日期:1979.1
Flash vacuum pyrolysis of furoxans generates nitrile oxides, which have been reacted with alkenes to yield 2-isoxazolines, and have been examined by 1H and 13C nmr spectroscopy.
呋喃喃的闪蒸真空热解生成一氧化氮,该氧化氮已与烯烃反应生成2-异恶唑啉,并已通过1 H和13 C nmr光谱进行了检查。
Oxidation of <i>o</i>-dioxime by (diacetoxyiodo)benzene: green and mild access to furoxans
作者:Qi Zhang、Cheng Zhao、Xun Zhang、Chunlin He、Siping Pang
DOI:10.1039/d1nj05510k
日期:——
widely used in the field of high energy density materials because of its excellent properties such as high density, high standard enthalpy of formation and high nitrogen content. However, its existing synthesis methods are still restricted by the problems of difficult substrate preparation and manual handling of hazardous reagents. Herein, we disclosed a mildoxidation strategy to efficiently obtain
<i>N</i>-Vinyl-Nitroimidazole Cycloadditions: Potential Routes to Nucleoside Analogues
作者:Christopher Ramsden、Russell Clayton
DOI:10.1055/s-2005-872083
日期:——
Cycloaddition reactions of 4-nitro- and 5-nitro-1-vinylimidazoles have been investigated. The cycloadducts obtained are potential intermediates for synthesis of purine nucleoside analogues via reduction to the corresponding aminoimidazoles. A byproduct obtained using benzonitrile oxide as 1,3-dipolarophile has been identified as a novel tricyclic isomer 12 of the cycloadduct 11.
Short and efficient synthesis of 1-(2-oxido-1,2,5-oxadiazol-3-yl)alkyl nitrates by unconventional nitrooxylation of 3-alkyl-1,2,5-oxadiazole 2-oxides
作者:Vladimir A. Ogurtsov、Alexey V. Shastin、Sergei G. Zlotin、Oleg A. Rakitin
DOI:10.1016/j.tetlet.2016.07.048
日期:2016.9
A short and efficientsynthesis of 1-(2-oxido-1,2,5-oxadiazol-3-yl)alkyl nitrates from 3-alkyl-1,2,5-oxadiazole 2-oxides, using a mixture of nitric and sulfuric acids in chloroform, has been developed. The scope of the unconventional reaction was established; its mechanism likely included a new Grob-type fragmentation.
Unusual transformation of 3-alkylfuroxans into 3-(nitrooxyalkyl)furoxans on treatment with a mixture of nitric and sulfuric acids
作者:V. A. Ogurtsov、A. V. Shastin、S. G. Zlotin、O. A. Rakitin
DOI:10.1007/s11172-016-1675-6
日期:2016.12
A versatile one-pot synthesis of 4-substituted 3-(nitrooxyalkyl)furoxans by the reaction of 3-alkylfuroxans with a mixture of nitric and sulfuricacids was developed. A plausible mechanism of this unusual transformation was explained in terms of a new Grob-type fragmentation.