Sodium Dithionite → (R)-tert-Butyl(1-(7-methoxy-1-methyl-2-(1-(2,2,2-trifluoroethyl)-1H-pyrrolo[2,3-b]pyridin-2-yl)-1H-benzo[d]imidazole-5-carbonyl)piperidin-3-yl)carbamate

온도

100 °C

To a solution of (R)-tert-butyl(1-(3-methoxy-4-(methylamino)-5-nitrobenzoyl)piperidin-3-yl)carbamate (3.58 g, 8.76 mmol) and 1-(2,2,2-trifluoroethyl)-1H-pyrrolo[2,3-b]pyridine-2-carbaldehyde (2.61 g, 11.44 mmol) in ethanol (140 ml) was added portionwise a solution of sodium hydrosulfite (3.18 g, 15.53 mmol) in water (70 ml). The mixture was flushed with nitrogen then heated at 100° C. overnight (16 hours). The reaction mixture was concentrated under vacuum then diluted with DCM (150 ml) and water (150 ml). The organic layer was collected and the aqueous layer washed with DCM (3×100 ml). Organic layers were collected, dried with Na2SO4, filtered through a hydrophobic frit and concentrated under vacuum to yield 5.5 g of crude product as white solid. This was dissolved in a minimum volume of DCM and purified using Biotage SP4 on a 100 g SNAP silica cartridge. The column was eluted with a gradient of 70-100% ethyl acetate in DCM for 10CV. Appropriate fractions were collected and concentrated under vacuum to yield the title compound as a white solid (4.31 g).

1. customThe mixture was flushed with nitrogen
2. concentrationThe reaction mixture was concentrated under vacuum
3. additionthen diluted with DCM (150 ml) and water (150 ml)
4. customThe organic layer was collected
5. washthe aqueous layer washed with DCM (3×100 ml)
6. customOrganic layers were collected
7. dry with materialdried with Na2SO4
8. filtrationfiltered through a hydrophobic frit
9. concentrationconcentrated under vacuum
10. customto yield 5.5 g of crude product as white solid
11. custompurified
12. washThe column was eluted with a gradient of 70-100% ethyl acetate in DCM for 10CV
13. customAppropriate fractions were collected
14. concentrationconcentrated under vacuum

ORD 기록

ord-96cd6732cb984dddaa577ceffe2d081a

출처 데이터셋

uspto-grants-2015_09

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US09127003B2