Dichloromethane → 7-Fluoro-3,4,4a,5-tetrahydro-2H-indeno[1,2-b]pyridine

Participants

Reaction Conditions

Reaction Steps

3-Bromopropylamine (4.7 g. 21.7 mmole) and 5-Fluoro-1-indanone (2.5 g, 16.7 mmole) were dissolved in 50 ml DMF and the reaction was cooled to 0° C. Triethylamine (13.5 g, 133 mmole) was added. 20 ml DCM was also added to help with the stirring. Titanium chloride (1M in DCM, 15 ml) was then added and the ice bath was removed. The reaction was stirred at room temperature overnight. 200 ml ether was added and the reaction was filtered though a Celite cake. The filtrate was concentrated to dryness under vacuum. The residue was dissolved in 200 ml ether and washed with brine (2×200 ml). The organic layer was dried over sodium sulfate and concentrated to dryness. 2.6 g Black oil was obtained and it was used in next step without further purification.

Provenance & Evidence