Trifluoroacetic acid → (S)-1-((R)-2,2,2-trifluoro-1-(3-(6-fluoro-8-isopropoxyquinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)ethyl)pyrrolidin-3-amine

HRID 338890Notes

Reaction equation

HRID 338890 reaction equation
[F:1][C:2]([F:42])([F:41])[C@H:3]([N:28]1[CH2:32][CH2:31][C@H:30]([NH:33]C(=O)OC(C)(C)C)[CH2:29]1)[C:4]1[CH:5]=[CH:6][C:7]2[N:8]([C:10]([C:13]3[CH:22]=[CH:21][C:20]4[C:15](=[C:16]([O:24][CH:25]([CH3:27])[CH3:26])[CH:17]=[C:18]([F:23])[CH:19]=4)[N:14]=3)=[N:11][N:12]=2)[CH:9]=1.C(O)(C(F)(F)F)=O>>[F:42][C:2]([F:1])([F:41])[C@H:3]([N:28]1[CH2:32][CH2:31][C@H:30]([NH2:33])[CH2:29]1)[C:4]1[CH:5]=[CH:6][C:7]2[N:8]([C:10]([C:13]3[CH:22]=[CH:21][C:20]4[C:15](=[C:16]([O:24][CH:25]([CH3:27])[CH3:26])[CH:17]=[C:18]([F:23])[CH:19]=4)[N:14]=3)=[N:11][N:12]=2)[CH:9]=1

Participants

3

Reactant 2

HCID 6422Trifluoroacetic acidHCID 86707433tert-butyl (S)-1-((R)-2,2,2-trifluoro-1-(3-(6-fluoro-8-isopropoxyquinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)ethyl)pyrrolidin-3-ylcarbamate

Product 1

HCID 70984669(S)-1-((R)-2,2,2-trifluoro-1-(3-(6-fluoro-8-isopropoxyquinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)ethyl)pyrrolidin-3-amineYield 105.4%

Procedure

To tert-butyl (S)-1-((R)-2,2,2-trifluoro-1-(3-(6-fluoro-8-isopropoxyquinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)ethyl)pyrrolidin-3-ylcarbamate (120 mg, 0.204 mmol) was added TFA (2 mL) and the reaction was stirred for 30 minutes. After concentrating to dryness, the residue was dissolved in methanol and added to 2N HCl in ether. The resulting solid was filtered and dried under high vacuum to yield (S)-1-((R)-2,2,2-trifluoro-1-(3-(6-fluoro-8-isopropoxyquinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)ethyl)pyrrolidin-3-amine (105 mg, 105% yield) hydrochloride as a beige solid. LCMS APCI (+) m/z 489 (M+H). Specific rotation: [α]26D=+1.43° (c=0.93, MeOH).

Workup

  1. concentrationAfter concentrating to dryness
  2. dissolutionthe residue was dissolved in methanol
  3. additionadded to 2N HCl in ether
  4. filtrationThe resulting solid was filtered
  5. customdried under high vacuum

Sources & evidence

ORD record
ord-72d5cd38c2e84985a1c2cea975f13704
Source dataset
uspto-grants-2014_11
Patent number
US08889704B2

Reaction notes

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