Reaction of pyrylium salts with nucleophiles. Part 25. Formation of pyridine-1-oxides, 2-isoxazolines and 1-pyrazoline-1-oxides☆
Dedicated to the 70th anniversary of Alan Katritzky who, for 35 years, provided us with moral assistance and encouragement.
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Cited by (18)
Organocatalytic Oxidative Cyclization of Amidoximes for the Synthesis of 1,2,4-Oxadiazolines
2018, Advanced Synthesis and CatalysisVibrational and electronic circular dichroism studies on the axially chiral pyridine-N-oxide: trans-2,6-di-ortho-tolyl-3,4,5-trimethylpyridine-N-oxide
2015, Tetrahedron AsymmetryCitation Excerpt :The pyridine-N-oxide moiety together with the two aryl chromophores have different arrangements in the (aS,aS) and (aR,aR) enantiomers, which allows them to be distinguished by VCD and ECD. The synthesis of pyridine-N-oxide 1 was based on the reaction of pyrylium salts with hydroxylamine40 and is shown in Scheme 1. Dehydration of 3-methyl-pentan-3-ol afforded alkenes 3 and 4.
Research progress on the synthesis and application of pyrylium salts
2015, Chinese Journal of Organic Chemistry
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Balaban A. T.; Cravey M.; Ghivirigǎ I. Heterocyclic Commun. 1994, 1, 17, part 24.
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