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Trifluoroacetic acid → HCID 178471969, compound

HRID 2171909
Notes
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Reaction equation

HRID 2171909 reaction equation
[F:1][C:2]1[C:3]([NH:37][CH:38]([C:45]2([CH3:50])[CH2:49][CH2:48][CH2:47][CH2:46]2)[CH2:39][C:40]([O:42][CH2:43][CH3:44])=[O:41])=[N:4][C:5]([C:8]2[C:16]3[C:11](=[N:12][CH:13]=[C:14]([F:17])[CH:15]=3)[N:10](C(C3C=CC=CC=3)(C3C=CC=CC=3)C3C=CC=CC=3)[N:9]=2)=[N:6][CH:7]=1.C([SiH](CC)CC)C.FC(F)(F)C(O)=O>ClCCl>[F:1][C:2]1[C:3]([NH:37][CH:38]([C:45]2([CH3:50])[CH2:46][CH2:47][CH2:48][CH2:49]2)[CH2:39][C:40]([O:42][CH2:43][CH3:44])=[O:41])=[N:4][C:5]([C:8]2[C:16]3[C:11](=[N:12][CH:13]=[C:14]([F:17])[CH:15]=3)[NH:10][N:9]=2)=[N:6][CH:7]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 6422Trifluoroacetic acidHCID 12052TriethylsilaneHCID 86714770Racemic ethyl 3-[[5-fluoro-2-(5-fluoro-1-trityl-pyrazolo[3,4-b]pyridin-3-yl)pyrimidin-4-yl]amino]-3-(1-methylcyclopentyl)propanoate2×

Product 1

HCID 178471969HCID 178471969, compound

Reagents, catalysts & solvents 1

HCID 6344
Dichloromethane
Solvent

Procedure

To a solution of racemic ethyl 3-[[5-fluoro-2-(5-fluoro-1-trityl-pyrazolo[3,4-b]pyridin-3-yl)pyrimidin-4-yl]amino]-3-(1-methylcyclopentyl)propanoate, 148a, (0.240 g, 0.357 mmol) in dichloromethane (20 mL) was added triethylsilane (0.285 mL, 1.784 mmol) followed by trifluoroacetic acid (0.275 mL, 3.567 mmol). The reaction mixture was stirred at room temperature overnight. The reaction mixture was concentrated in vacuo and the resulting crude residue was purified by silica gel chromatography (5% MeOH/CH2Cl2) to afford the desired product: 1H NMR (400 MHz, CDCl3) δ 11.80 (s, 2H), 8.59 (d, J=12.3 Hz, 2H), 8.48 (d, J=7.9 Hz, 1H), 6.60 (d, J=8.3 Hz, 1H), 5.07 (s, 1H), 4.09 (q, J=7.0 Hz, 2H), 2.97-2.59 (m, 2H), 1.70 (dd, J=27.7, 13.9 Hz, 6H), 1.57-1.33 (m, 2H), 1.16 (dd, J=18.1, 11.1 Hz, 6H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time=2.97 minutes (M+H) 431.24.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customthe resulting crude residue was purified by silica gel chromatography (5% MeOH/CH2Cl2)

Sources & evidence

ORD record
ord-c9f6f67b91614f53a0b05cd3c2a00e1a
Source dataset
uspto-grants-2015_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09051319B2

Reaction notes

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