(Pyridin-4-yl)boronic acid → tert-butyl 4-(3-fluorophenyl)-3-(3-(pyridin-4-yl)-1-trityl-1H-indazole-5-carboxamido)piperidine-1-carboxylate

tert-butyl 3-(3-bromo-1-trityl-1H-indazole-5-carboxamido)-4-(3-fluorophenyl)-piperidine-1-carboxylate (80 mg, 0.105 mmol) was added to a vial containing pyridin-4-ylboronic acid (13 mg, 0.105 mmol) and tetrakis(triphenylphosphine)palladium (13 mg, 0.0105 mmol). After purging the vial with nitrogen gas, dioxane (0.5 mL) and 2M sodium carbonate (0.5 mL) was added to the vial respectively. The reaction mixture was stirred and was heated to 80° C. for overnight. Upon completion, the mixture was concentrated under vacuo. Water (3 mL) was added and was extracted using dichloromethane (3×5 mL). The extracts were combined and dried using anhydrous sodium sulfate. The resulting suspension was filtered and concentrated. The crude product was progressed to the next step without purification.

1. customAfter purging the vial with nitrogen gas, dioxane (0.5 mL) and 2M sodium carbonate (0.5 mL)
2. additionwas added to the vial respectively
3. concentrationUpon completion, the mixture was concentrated under vacuo
4. additionWater (3 mL) was added
5. extractionwas extracted
6. customdried
7. filtrationThe resulting suspension was filtered
8. concentrationconcentrated
9. customThe crude product was progressed to the next step without purification

ORDレコード

ord-93b8ce6e91fc40dfb369978dbceaf674

出典データセット

uspto-grants-2015_04

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08999957B2