Potassium Carbonate → 1-(5-{(S)-1-[(R)-1-(4-Methoxy-phenyl)-ethyl]-pyrrolidin-2-yl}-pyridin-3-yl)-1H-indole-4-carboxylic acid ethyl ester

Temperatur

190 °C

A mixture of 3-bromo-5-{(S)-1-[(R)-1-(4-methoxy-phenyl)-ethyl]-pyrrolidin-2-yl}-pyridine (4.0 g, 11 mmol), 1H-indole-4-carboxylic acid ethyl ester (6.3 g, 33 mmol), K2CO3 (2.3 g, 16.6 mmol), copper iodide (0.42 g, 2.2 mmol) in NMP (22 mL) was heated in a microwave tube at 190° C. for 30 minutes. The resulting mixture was cooled to room temperature filtered through celite and concentrated under reduced pressure to give an oil. This oil was purified by silica gel column chromatography (30% ethyl acetate/heptane) to give the titled compound as a yellow solid (2.2 g, 42%).

1. temperatureThe resulting mixture was cooled to room temperature
2. filtrationfiltered through celite and
3. concentrationconcentrated under reduced pressure
4. customto give an oil
5. customThis oil was purified by silica gel column chromatography (30% ethyl acetate/heptane)

ORD-Eintrag

ord-7f13e24fa1d344e0817a7cd5b9bcff6d

Quelldatensatz

uspto-grants-2015_03

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08993523B2