Ethanol → HCID 19611365, compound

Participants

Reaction Steps

Under ice-cooling, hydrazine monohydrate (190 μl, 3.8 mmol) was added to a mixture of N-[2-[2-[3-[(4-tert-butyl-2-thiazolyl)methoxy]benzoylamino]-4-[3-(4-chlorophenylsulfonyl)propyl]phenoxy]ethyl]phthalimide (1.5 g, 1.9 mmol), ethanol (5 ml) and tetrahydrofuran (20 ml), and the resulting mixture was stirred overnight at room temperature and then heated under reflux for 3 hours. Ice-water was added to the reaction solution, and then the product formed was extracted with chloroform. The resulting organic layer was washed with saturated sodium bicarbonate aqueous solution and distilled water in that order, dried over anhydrous magnesium sulfate, and then concentrated. The resulting residue was purified by silica gel column chromatography (eluent=chloroform:acetone=2:1), made into hydrochloride by adding 4 N hydrochloric acid/ethyl acetate, and then crystallized from diethyl ether to give 3-[(4-tert-butyl-2-thiazolyl)methoxy]-5'-[3-(4-chlorophenylsulfonyl)-propyl]-2'-(2-aminoethoxy)benzanilide 1.4 hydrochloride.0.7 hydrate (160 mg, 0.23 mmol, 12%) as white crystals.

Provenance & Evidence