1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride → HCID 67118658, compound

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Reaction Steps

A mixture of [2-(7-methoxy-5-{[6-(methoxymethyl)pyridin-3-yl]oxy}-1H-indol-2-yl)-4,5-dihydro-1,3-thiazol-5-yl]acetic acid (300 mg), N-ethyl-N′-(3-dimethylaminopropyl)carbodiimide hydrochloride (268 mg), 1-hydroxybenzotriazole monohydrate (214 mg), 2M ethylamine tetrahydrofuran solution (0.7 mL) and N,N-dimethylformamide (10 mL) was stirred at room temperature for 16 h. The mixture was concentrated under reduced pressure. The residue was dissolved in water and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over magnesium sulfate, filtered and concentrated. The residue was purified by basic silica gel column chromatography (methanol/ethyl acetate/hexane=0/70/30 to 8/92/0, volume ratio) to give a pale yellow amorphous solid. The amorphous solid was crystallized from acetonitrile to give white crystals. The crystals were recrystallized from acetonitrile to give the title compound (222 mg, 70%) as colorless crystals. MS 455 (MH+). mp 130-132° C.

Provenance & Evidence