p-Toluenesulfonic acid monohydrate → HCID 86724295, compound

Participants

Reaction Conditions

Reaction Steps

The mixture of di-tert-butyl[6′-(6-methoxypyridin-2-yl)dispiro[1,3-oxazole-4,4′-chromene-3′,3″-oxetan]-2-yl]imidodicarbonate (160 mg, 0.289 mmol) and TsOH.H2O (275 mg, 1.45 mmol) in MeCN (3.2 mL) was stirred for 4 hours at 40° C. After dilution with CHCl3, the organic layer was washed with saturated aqueous NaHCO3 and brine, dried over Na2SO4, and concentrated in vacuo. The residue was purified by silica gel chromatography (CHCl3:MeOH=99:1-95:5) and then the residue was washed with EtOAc to afford 6′-(6-methoxypyridin-2-yl)dispiro[1,3-oxazole-4,4′-chromene-3′,3″-oxetan]-2-amine (40 mg).

Provenance & Evidence