R. Menicagli et al., ONE-POT SYNTHESIS OF 2-ALKYLTETRAHYDROPYRAN-3-ONES FROM 3-NITRO-5,6-DIHYDRO-4H-PYRAN AND GRIGNARD-REAGENTS, Tetrahedron letters, 36(52), 1995, pp. 9531-9532
3-Nitro-5,6-dihydro-4H-pyran reacts with primary aliphatic and benzyli
c Grignard reagents and, in suitable hydrolysis conditions, gives the
corresponding 2-alkyltetrahydropyran-3-ones in satisfactory yields.