Hydrochloric Acid → 6-(4-Oxospiro[chroman-2,4'-piperidin]-6-yl)nicotinamide dihydrochloride

関与物質

反応手順

To a suspension of tert-butyl 6-(5-carbamoylpyridin-2-yl)-4-oxospiro[chroman-2,4′-piperidine]-1′-carboxylate in dioxane (125 ml) was added 4N HCl in dioxane (125 ml) and the mixture was stirred for 18 h. After Et2O was added to the mixture, the resulted precipitate was collected by aeration, washed with Et2O to give intended compound as a colorless solid.

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