Sodium Hydroxide → 7-Iodo-3,4,5',6'-tetrahydro-2H,4'H-spiro[1-benzofuro[2,3-c]pyridine-1,3'-pyran]

Beteiligte Stoffe

Reaktionsschritte

A solution of 2-(6-iodo-benzofuran-3-yl)-ethylamine (1.00 g, 3.48 mmol) and dihydro-pyran-3-one (1.05 g, 10.4 mmol) in trifluoroacetic acid (4.00 mL) was heated at 80° C. for 15 h. The reaction mixture was cooled down, 1M aqueous NaOH was added and the mixture was extracted with DCM. The solvent was evaporated and the residue was purified by silica gel chromatography eluting with DCM-MeOH—NH4OH to afford the title product. mp 131-137° C. dec.; MS m/z 370 [M+H]+

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