Hydrochloric Acid → HCID 18956279, compound

Participants

Reaction Steps

A mixture of 2-(diaminomethyleneamino)-4-[6-(1-tert-butoxycarbonylpiperidin-3-yl)carbonylaminomethylpyridin-2-yl]thiazole (1.9 g) and 4N-methanolic hydrogen chloride (40 ml) was stirred for 7 hours at ambient temperature. To the reaction mixture was added a tetrahydrofuran (40 ml) and the isolated precipitate was collected by filtration. The precipitate was added to water and adjusted to pH 13 with 5N-sodium hydroxide. The mixture was extracted with a mixture of ethyl acetate and tetrahydrofuran. The extract was washed with brine, dried over magnesium sulfate and evaporated in vacuo. The residue was recrystallized from a mixture of methanol, dioxane and diisopropyl ether to give 2-(diaminomethyleneamino)-4-[6-(3-piperidyl)carbonylaminomethylpyridin-2-yl]thiazole (0.47 g).

Provenance & Evidence