Synthesis and reactions of some nitrone
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Orazio A Attanasi; Paolino Filippone; Chiara Fiorucci
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Article
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1997
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Elsevier Science
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French
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A~,lnitroso ccxnpounds c;isily react ;is nucleophilcs ~ith conjugated azoalkenes to give (~-(arylimino-N-oxide)hydraz~mes by their 1,4-addition to the a~x~-cnc system These adducts undergo an internal hetcr~x:yclizati~m process with pyra;/.ole ring formation to produce 1-alkoxycarbonyl-or I-amintx~l