4-Methylmorpholine → HCID 89499077, compound

Participants

Reaction Conditions

Reaction Steps

An ambient solution of EXAMPLE 14B (182 mg), benzo[d]thiazol-2-amine (71.1 mg), 1-ethyl-3-[3-(dimethylamino)propyl]-carbodiimide hydrochloride (113 mg), 1-hydroxybenzotriazole hydrate (91 mg), and N-methylmorpholine (0.065 mL) was stirred overnight. An additional 1 equivalent each of 1-ethyl-3-[3-(dimethylamino)propyl]-carbodiimide hydrochloride, N-methylmorpholine, 1-hydroxybenzotriazole hydrate, and 2-aminobenzothiazole were added, and the reaction was heated to 40° C. for 4 hours. The reaction mixture was cooled to room temperature and quenched by the addition of saturated aqueous bicarbonate solution and ethyl acetate. The layers were separated, and the aqueous was extracted with additional 2× ethyl acetate. The combined organics were dried with anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by chromatography on silica gel with 0-50% ethyl acetate/hexanes to provide the title product.

Provenance & Evidence