Trifluoroacetic acid → HCID 178509349, compound

HRID 1920863Notes

Reaction equation

HRID 1920863 reaction equation
[C:1]([C:3]1([C:6]2[CH:7]=[C:8]([CH2:44][CH2:45][CH2:46][NH:47]C(=O)OC(C)(C)C)[CH:9]=[C:10]([C:12]3[CH:17]=[CH:16][N:15]=[C:14]4[N:18](C(C5C=CC=CC=5)(C5C=CC=CC=5)C5C=CC=CC=5)[N:19]=[C:20]([C:21]([F:24])([F:23])[F:22])[C:13]=34)[CH:11]=2)[CH2:5][CH2:4]1)#[N:2].C([SiH](CC)CC)C.C(O)(C(F)(F)F)=O>C(Cl)Cl>[NH2:47][CH2:46][CH2:45][CH2:44][C:8]1[CH:7]=[C:6]([C:3]2([C:1]#[N:2])[CH2:5][CH2:4]2)[CH:11]=[C:10]([C:12]2[CH:17]=[CH:16][N:15]=[C:14]3[NH:18][N:19]=[C:20]([C:21]([F:23])([F:24])[F:22])[C:13]=23)[CH:9]=1

Participants

5

Reactant 3

HCID 6422Trifluoroacetic acidHCID 12052TriethylsilaneHCID 67492607HCID 67492607, compound

Product 1

HCID 178509349HCID 178509349, compoundYield 57.7%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

tert-Butyl 3-(3-(1-cyanocyclopropyl)-5-(3-(trifluoromethyl)-1-trityl-1H-pyrazolo[3,4-b]pyridin-4-yl)phenyl)propylcarbamate (72 mg, 0.09893 mmol) was dissolved in DCM (3 mL) and cooled to 0° C. Triethylsilane (46.01 mg, 63.20 μL, 0.3957 mmol) was added followed by TFA (0.5 mL). The reaction was stirred at 0° C. for 1 hour then the solvent removed under reduced pressure. The crude product was dissolved in DMSO and purified by FractionLynx. The fractions were passed through bicarbonate cartridges to obtain free base and lyophilised to give 1-(3-(3-aminopropyl)-5-(3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-4-yl)phenyl)cyclopropanecarbonitrile as a white solid (22 mg, 57%).

Workup

  1. customthe solvent removed under reduced pressure
  2. dissolutionThe crude product was dissolved in DMSO
  3. custompurified by FractionLynx
  4. customto obtain free base

Sources & evidence

ORD record
ord-c3f9849284be498f8eb8b2fc25bf64ea
Source dataset
uspto-grants-2012_05
Patent number
US08173635B2

Reaction notes

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