5-fluoro-3-(1,2,3,6-tetrahydropyridin-4-yl)-1H-indole → HCID 10140200, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of (2R)-8,9-diethyl-2,3-dihydro[1,4]dioxino[2,3-f]-quinoxalin-2-ylmethyl 4-methylbenzenesulfonate (0.300 g, 0.700 mmole) in methyl sulfoxide (20 mL) was added 5-fluoro-3-(1,2,3,6-tetrahydro-4-pyridinyl)-1 H-indole (0.606 g, 2.800 mmole) and the reaction mixture was heated to 80° C. for 12 hours. The reaction mixture was allowed to cool to room temperature and was diluted with ethyl acetate (250 mL), washed with water (2×100 mL), aqueous sodium chloride (100 mL), dried (magnesium sulfate) and the solvent was removed in vacuo to give a crude solid. Purification by flash column chromatography (silica, methanol:ethyl acetate 1:9) followed by recrystallization from ethanol provided 0.161 g (49%) of the (S)-enantiomer of the title compound as a yellow crystalline solid. Rf =0.38 (silica, methanol:ethyl acetate 1:9); mp>120° C. dec.

Provenance & Evidence