Sodium Carbonate → HCID 19891060, compound

Participants

Reaction Steps

N-[3-(3-Aminophenoxy)propyl]-2,3-dihydro-8-methoxy-1,4-benzodioxin-2-methanamine dihydrochloride hydrate (1.2 g, 2.75 mmole), prepared in Example 11 above, was dissolved in 25 ml of 48% HBr and refluxed overnight under nitrogen. The mixture was diluted with water to 300 ml, carefully neutralized with solid sodium carbonate, and twice extracted with 200 ml of 3:1 dichloromethane/isopropanol. The combined extracts were washed with saturated aqueous sodium chloride, dried over sodium sulfate, filtered and concentrated in vacuum. The residue was crystallized from 50 ml of isopropanol with the addition of 2 ml of 4N HCl/isopropanol to give 0.37 g of the title compound as a tan solid, dihydrochloride, quarter hydrate, m.p. 249°-255° C.

Provenance & Evidence