Hydrochloric Acid → HCID 131727778, compound

Participants

Reaction Steps

10 mmol of compound (80) is dissolved in 30 mL of dioxane, and 10 mL of 6N hydrochloric acid solution is added, and the solution is refluxed overnight. The reaction is cooled to room temperature, concentrated to dryness, redissolved in 30 mL of tetrahydrofuran, and 10 mL of water and 30 mmol of sodium bicarbonate is added, followed by 15 mmol of Fmoc-Cl. The biphasic solution is stirred for 1 hour, and the tetrahydrofuran removed under vacuum. The aqueous solution is extracted with 1×50 mL of diethyl ether, acidified with 1N hydrochloric acid solution, and extracted with 2×50 mL of ethyl acetate. The ethyl acetate layers are combined, dry over sodium sulfate, and concentrated. Compound (81) is purified by silica gel column chromatography.

Provenance & Evidence