Tetrahydro-4H-pyran-4-one → HCID 9812960, compound

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Reaction Steps

Reactants: 2-ethynylpyridine (6.0 mmol, 618 mg), tetrahydro-4H-pyran-4-one (6.0 mmol, 600 mg); yields 2-(3,6-dihydro-2H-pyran-4-ylethynyl)pyridine as a transparent oil (200 mg, 18% overall yield). 1H NMR (CDCl3, 300 MHz) Δ8.57 (m, 1H), 7.63 (m, 1H), 7.44 (m, 1H), 7.21 (m, 1H), 6.29 (m, 1H), 4.25 (m, 2H) 3.81 (m, 2H), 2.36 (m, 2H). MS (EI ionization) 185 (M+).

Provenance & Evidence