tert-butyl (S)-1-((R)-1-(3-(7-ethoxy-6-fluoroquinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-2,2,2-trifluoroethyl)pyrrolidin-3-ylcarbamate → (S)-1-((R)-1-(3-(7-ethoxy-6-fluoro quinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-2,2,2-trifluoroethyl)pyrrolidin-3-amine

HRID 338949Notes

Reaction equation

HRID 338949 reaction equation
[CH2:1]([O:3][C:4]1[CH:13]=[C:12]2[C:7]([CH:8]=[CH:9][C:10]([C:14]3[N:18]4[CH:19]=[C:20]([C@@H:23]([N:28]5[CH2:32][CH2:31][C@H:30]([NH:33]C(=O)OC(C)(C)C)[CH2:29]5)[C:24]([F:27])([F:26])[F:25])[CH:21]=[CH:22][C:17]4=[N:16][N:15]=3)=[N:11]2)=[CH:6][C:5]=1[F:41])[CH3:2]>C(O)(C(F)(F)F)=O>[CH2:1]([O:3][C:4]1[CH:13]=[C:12]2[C:7]([CH:8]=[CH:9][C:10]([C:14]3[N:18]4[CH:19]=[C:20]([C@@H:23]([N:28]5[CH2:32][CH2:31][C@H:30]([NH2:33])[CH2:29]5)[C:24]([F:26])([F:25])[F:27])[CH:21]=[CH:22][C:17]4=[N:16][N:15]=3)=[N:11]2)=[CH:6][C:5]=1[F:41])[CH3:2]

Participants

3

Reactant 1

HCID 86707470tert-butyl (S)-1-((R)-1-(3-(7-ethoxy-6-fluoroquinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-2,2,2-trifluoroethyl)pyrrolidin-3-ylcarbamate

Product 1

HCID 70983806(S)-1-((R)-1-(3-(7-ethoxy-6-fluoro quinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-2,2,2-trifluoroethyl)pyrrolidin-3-amineYield 85%

Reagents, catalysts & solvents 1

HCID 6422Trifluoroacetic acidSolvent

Procedure

tert-butyl (S)-1-((R)-1-(3-(7-ethoxy-6-fluoro quinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-2,2,2-trifluoroethyl)pyrrolidin-3-ylcarbamate (265 mg, 0.461 mmol) was stirred in TFA (3 mL) for 1 hour and then concentrated. The residue was dissolved in minimum methanol and added dropwise to a 4N HCl in ether solution. The resulting solid was filtered and dried to yield (S)-1-((R)-1-(3-(7-ethoxy-6-fluoro quinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-2,2,2-trifluoroethyl)pyrrolidin-3-amine (186 mg, 85.0% yield) hydrochloride as an off-white solid. LCMS APCI (+) m/z 475 (M+H). Specific rotation: [α]24D=1.84° (c=1.03, MeOH).

Workup

  1. concentrationconcentrated
  2. dissolutionThe residue was dissolved in minimum methanol
  3. additionadded dropwise to a 4N HCl in ether solution
  4. filtrationThe resulting solid was filtered
  5. customdried

Sources & evidence

ORD record
ord-2774483bf81c46e4b21f8b4e116d545c
Source dataset
uspto-grants-2014_11
Patent number
US08889704B2

Reaction notes

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