Reaktion #718008

Reaktionsgleichung

Triisopropylsilyl chloride

Intermediate 84e

3-[(S)-2-(6-Fluoro-[1,2,4]triazolo[4,3-a]pyridin-3-yl)-pyrrolidin-1-yl]-propan-1-ol

Et3N

→

title compound

Ausbeute 92.0%

6-Fluoro-3-[(S)-1-(3-triisopropylsilanyloxy-propyl)-pyrrolidin-2-yl]-[1,2,4]triazolo[4,3-a]pyridine

Ausbeute 92.0%

Lösungsmittel

DCM

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.STIRRINGThe reaction was stirred for 3 h
2. 2
   Sonstigethen partitioned between EtOAc and water
3. 3
   ExtraktionThe aqueous layer was then extracted with EtOAc (3×)
4. 4
   WaschenThe combined organic layers were washed with brine
5. 5
   Trocknendried (MgSO4)
6. 6
   Filtrationfiltered
7. 7
   Sonstigeevaporated in vacuo
8. 8
   SonstigeThe residue was purified by FCC

Vorschrift

Triisopropylsilyl chloride (266 μ□L, 1.24 mmol) was added to a solution of Intermediate 84e (218 mg, 0.82 mmol) and Et3N (26 μ□L, 1.24 mmol) in DCM (8.00 mL). The reaction was stirred overnight then 4-(dimethylamino)pyridine (10.0 mg, 0.082 mmol) added. The reaction was stirred for 3 h then partitioned between EtOAc and water. The aqueous layer was then extracted with EtOAc (3×). The combined organic layers were washed with brine, dried (MgSO4), filtered and evaporated in vacuo. The residue was purified by FCC, using 0-7.5% [2M NH3 in MeOH] in DCM, to give the title compound (317 mg, 92%). 1H NMR (300 MHz, CDCl3): 0.92 (21H, s), 1.56-1.68 (2H, m), 1.89-2.10 (3H, m), 2.21-2.40 (3H, m), 2.56 (1H, dt, J 12.1, 7.9), 3.40 (1H, m), 3.46-3.64 (2H, m), 4.22 (1H, t, J 8.4), 7.16 (1H, ddd, J 9.9, 7.5, 2.3), 7.71 (1H, ddd, J 10.0, 4.9, 0.6), 8.64 (1H, m).

Quelle