Sodium Iodide → HCID 53909604, compound

Participants

Reaction Conditions

Reaction Steps

(R)-2,3-Dihydro-6-hydroxy-1,4-benzodioxin-2-methanamine (2.58 g, 14.2 mmole), 7-(3-chloropropoxy)coumarin (3.08 g, 12.9 mmole), diisopropylethylamine (10 ml, 57 mmole) and sodium iodide (1.98 g, 13.2 mmole) were combined in 175 ml of DMF and heated at 94° C. for 24 hours under a nitrogen atmosphere. The solvent was then removed in vacuum. The residue was twice column chromatographed on silica gel using 1% methanol/dichloromethane as eluant. The product-containing fractions (Rf=0.45 on silica gel with 5% methanol/dichloromethane) were combined and concentrated in vacuum and the pure free base redissolved in methanol and boiled on a hot plate, the methanol gradually being replaced with isopropanol. 4N HCL/isopropanol was added and the title compound was collected by filtration. After two additional recrystallizations from isopropanol, 0.35 g of white solid, monohydrochloride, m.p. 236°-242° C., was obtained.

Provenance & Evidence