2H-Pyran-4-carboxylic acid, tetrahydro-, methyl ester → 3-(Oxan-4-yl)-3-oxopropanenitrile

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Reaction Steps

Prepared from methyl tetrahydropyran-4-carboxylate (3 g, 20.80 mmol) according to the method described for 4-methyl-3-oxopentanenitrile in Example 122A Step 1, to afford 3-oxo-3-(tetrahydro-2H-pyran-4-yl)propanenitrile as a yellow oil (760 mg, 24%) which was used in the next step without further purification. 1H NMR (300 MHz, CDCl3) δ 3.96-4.05 (m, 2H), 3.52 (s, 1H), 3.42-3.50 (m, 2H), 2.82 and 2.59 (2×m, 1H), 1.67-1.90 (m, 4H).

Provenance & Evidence