Dimethylformamide → 7-[(3-Fluorophenyl)sulfanyl]-3,4,5',6'-tetrahydro-2H,4'H-spiro[1-benzofuro[2,3-c]pyridine-1,3'-pyran]

関与物質

反応条件

反応手順

7-Iodo-3,4,5′,6′-tetrahydro-2H,4′H-spiro[1-benzofuro[2,3-c]pyridine-1,3′-pyran] (0.20 g, 0.56 mmol), neocuproine (11.6 mg, 0.0558 mmol) and copper(I) iodide (53.1 mg, 0.279 mmol) were dissolved into the anhydrous DMF (4 mL, 50 mmol) in a 20 mL scintillation vial under N2. 3-Fluoro-benzenethiol (104 μL, 1.23 mmol) was added neat followed immediately by the addition of the sodium tert-butoxide (118 mg, 1.23 mmol). The reaction vial was capped with a teflon coated cap and the mixture was stirred at 100° C. overnight. After 15 h, the reaction was cooled to room temperature and concentrated under vacuum. The residual solid was partially dissolved into a 5% MeOH in DCM solution and flushed through a Celite plug. The concentrated filtrate was chromatographed on silica gel using DCM-MeOH—NH4OH to afford a brownish oil, used directly in the next step.

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