Potassium Carbonate → HCID 10273998, compound

Participants

Reaction Steps

To a solution of (2R)-8-ethyl-2,3-dihydro[1,4]dioxino[2,3-f]quinolin-2-ylmethyl 4-methylbenzenesulfonate (0.60 g, 1.5 mmole) and potassium carbonate (0.65 g, 4.70 mmole) in 30 mL of 1:1 THF/DMF was added 0.90 g (4.5 mmole) of 3-(1,2,3,6-tetrahydro-4-pyridinyl)-1H-indole. The mixture was heated at reflux under nitrogen for 6 hours. After cooling to room temperature, the mixture was concentrated to dryness under vacuum and the residue column chromatographed on silica gel using first methylene chloride to elute impurities and then 3% methanol in methylene chloride to elute the product. The product-containing fractions were concentrated in vacuum and the residue recrystallized from ethanol to give 0.42 g of the (S)-enantiomer of the title compound as a yellow solid (m.p. 190° C.).

Provenance & Evidence