Sodium Iodide → HCID 19778678, compound

Participants

Reaction Steps

2,3-Dihydro-7-chloro-1,4-benzodioxin-2-methanamine (1.72 g, 8.62 mmole), 7-(3-chloropropoxy)coumarin (1.88 g, 7.88 mmole), diisopropylethylamine (7.5 ml, 43.1 mmole) and sodium iodide (1.37 g, 9.14 mmole) were combined in 200 ml of DMF and heated at 80°-100° C. for 3 days under a nitrogen atmosphere. The solvent was then removed in vacuum and the residue was column chromatographed on silica gel using first 0.5% methanol/dichloromethane and then 1% methanol/dichloromethane as eluant. The product-containing fractions were combined and concentrated in vacuum, during which procedure the free base began to come out of solution. This material was collected by filtration and recrystallized from isopropanol with addition of 4N HCl/isopropanol to give 0.27 g of white solid, monohydrochloride, m.p. 235°-242° C.

Provenance & Evidence