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22.4.1.1.2.2.2 Variation 2: With α,β-Unsaturated Carbonyl Compounds

DOI: 10.1055/sos-SD-022-00306

Cicchi, S.; Cordero, F. M.Science of Synthesis, (200522231.

The reaction of nitrilium salts 30 with α,β-unsaturated carbonyl compounds gives 4H-1,3-oxazinium salts 31 or 6H-1,3-oxazinium salts 32 depending upon the use of ketones or aldehydes, respectively (Scheme 11).[‌49‌]

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References