corresponding styrenes usingnitrosoniumtetrafluoroborate as the nitrosation reagent in pyridine (basic media) or dichloromethane (neutral media). Acid‐sensitive functional groups were tolerated under these conditions. The probable reaction mechanism was elucidated. The experimental results support an ionic reaction pathway in contrast to the conventional acidic conditions with a radical mechanism.
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.