Sodium hydride → 4-((4-ethyl-1-methylpiperidin-4-yl)methoxy)-9H-diprido[2,3-b;4',3'-d]pyrrole-6-carbonitrile

Temperatur

40 °C

To a solution of (4-ethyl-1-methylpiperidin-4-yl)methanol (223 mg, 1.4 mmol) in tetrahydrofuran (3.2 mL) was added sodium hydride as 60% dispersion in mineral oil (57 mg, 1.4 mmol). The reaction mixture was stirred at ambient temperature for 5 minutes before 4-chloro-9-(2-trimethylsilanyl-ethoxymethyl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile (150 mg, 0.42 mmol) was added in one portion and the reaction mixture was stirred at this temperature for 10 minutes, and then heated at 40° C. for 4 hours. The mixture was diluted with water (20 mL) and ethyl acetate (50 mL). The organic layer was separated, dried over sodium sulfate, filtered, concentrated in vacuo, and purified flash chromatography (silica, 4 g, ISCO, 0-10% methanol in methylene chloride) to afford the title compound as a white foam, which was used in the next step without any further purification (152 mg, 76%).

1. additionwas added in one portion
2. customThe organic layer was separated
3. dry with materialdried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. custompurified flash chromatography (silica, 4 g, ISCO, 0-10% methanol in methylene chloride)

ORD-Eintrag

ord-8d9a85c2eefe40389a7517f27383710a

Quelldatensatz

uspto-grants-2016_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09440976B2