Abstract
Cyclic nitrones, viz., tetrahydropyridine 1-oxide, 3,4-dihydroisoquinoline 2-oxide, and 2-methoxycarbonyl-4,5-dihydro-3H-pyrrole 1-oxide, regioselectively add to dimethyl 3-methylidenecyclopropane-1,2-dicarboxylate to form 5-spirocyclopropaneisoxazolidines. The latter undergo isomerization upon heating to give the corresponding tetrahydropyridin-4-ols and enaminones.
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Dedicated to Academician of the Russian Academy of Sciences O. M. Nefedov on the occasion of his 80th birthday.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2253–2256, November, 2011.
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Molchanov, A.P., Tran, T.Q. & Kostikov, R.R. Regioselective addition of cyclic nitrones to Feist’s acid dimethyl ester. Russ Chem Bull 60, 2296–2300 (2011). https://doi.org/10.1007/s11172-011-0351-0
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DOI: https://doi.org/10.1007/s11172-011-0351-0