Cesium carbonate → methyl (S)-1-((S)-2-(4-((2R,5R)-5-(4-chloro-3-nitrophenyl)-1-(3,5-difluoro-4-(4-phenylpiperidin-1-yl)phenyl)pyrrolidin-2-yl)-2-nitrophenylcarbamoyl)pyrrolidin-1-yl)-3-methyl-1-oxobutan-2-ylcarbamate

Participants

Reaction Conditions

Reaction Steps

1-(4-((2R,5R)-2,5-Bis(4-chloro-3-nitrophenyl)pyrrolidin-1-yl)-2,6-difluorophenyl)-4-phenylpiperidine (0.745 g, 1.14 mmol) was dissolved in dioxane (12 mL) in a tube and treated with methyl(S)-1-((S)-2-carbamoylpyrrolidin-1-yl)-3-methyl-1-oxobutan-2-ylcarbamate (0.309 g, 1.14 mmol), cesium carbonate (0.409 g, 1.25 mmol), Xantphos (0.066 g, 0.11 mmol), and tris(dibenzylideneacetone)dipalladium(0) (0.052 g, 0.057 mmol). Nitrogen was bubbled through this mixture for 15 minutes, then the tube was sealed and heated at 100° C. for 2 hours. The mixture was diluted with water, extracted into dichloromethane, concentrated, and purified by chromatography, eluting with 0-5% methanol in dichloromethane to give 0.44 g (43%) of a dark yellow solid.

Provenance & Evidence