3,4-dihydro-2H-pyran → 2-Nitro-6-(tetrahydropyran-2-yloxy)phenol

Participants

Reaction Steps

To a solution of 3-nitrobenzene-1,2-diol (2.78 g) and 3,4-dihydro-2H-pyrane (1.81 g) in benzene (39 ml) was added p-toluenesulfonic acid monohydrate (5 mg) at ambient temperature, and the mixture was stirred for 24 hours. The reaction mixture was washed with saturated sodium bicarbonate solution, dried over magnesium sulfate and evaporated in vacuo. The residue was purified by silica gel column chromatography (chloroform—methanol) and crystallized with n-hexane to give 2-nitro-6-(tetrahydropyran-2-yloxy)phenol (2.32 g).

Provenance & Evidence