m-Chloroperbenzoic acid → 5-fluoro-3-(4-(methylsulfinyl)pyrimidin-2-yl)-1-trityl-1H-pyrazolo[3,4-b]pyridine

HRID 1055106Notes

Reaction equation

HRID 1055106 reaction equation
[F:1][C:2]1[CH:3]=[C:4]2[C:10]([C:11]3[N:16]=[C:15]([S:17][CH3:18])[CH:14]=[CH:13][N:12]=3)=[N:9][N:8]([C:19]([C:32]3[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=3)([C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)[C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)[C:5]2=[N:6][CH:7]=1.FC1C=C2C(B3OC(C)(C)C(C)(C)[O:49]3)=NN(C(C3C=CC=CC=3)(C3C=CC=CC=3)C3C=CC=CC=3)C2=NC=1.C1C=C(Cl)C=C(C(OO)=O)C=1>ClCCl>[F:1][C:2]1[CH:3]=[C:4]2[C:10]([C:11]3[N:16]=[C:15]([S:17]([CH3:18])=[O:49])[CH:14]=[CH:13][N:12]=3)=[N:9][N:8]([C:19]([C:26]3[CH:27]=[CH:28][CH:29]=[CH:30][CH:31]=3)([C:32]3[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=3)[C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)[C:5]2=[N:6][CH:7]=1

Participants

5

Reactant 3

HCID 70297m-Chloroperbenzoic acidHCID 679757175-Fluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-trityl-1H-pyrazolo[3,4-b]pyridineHCID 712479685-fluoro-3-(4-(methylthio)pyrimidin-2-yl)-1-trityl-1H-pyrazolo[3,4-b]pyridine

Product 1

HCID 712474945-fluoro-3-(4-(methylsulfinyl)pyrimidin-2-yl)-1-trityl-1H-pyrazolo[3,4-b]pyridine

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a cold (0° C.) mixture of 5-fluoro-3-(4-(methylthio)pyrimidin-2-yl)-1-trityl-1H-pyrazolo[3,4-b]pyridine, 135a, (0.70 g, 1.38 mmol) in dichloromethane (10.4 mL) was added mCPBA (0.43 g, 1.93 mmol). After 30 minutes, the mixture was diluted with dichloromethane and washed with 2N NaOH and brine. The organic phase was brine dried over Na2SO4, filtered and stripped down twice with CH3CN to afford 660 mg of desired product that was used without further purification: LCMS Gradient 60-98%, 0.1% formic acid, 7 min, C4/ACN, Retention Time=2.68 minutes (M+H) 520.

Workup

  1. washwashed with 2N NaOH and brine
  2. dry with materialdried over Na2SO4
  3. filtrationfiltered

Sources & evidence

ORD record
ord-88a1c3a448994ea9b235b57cb65e06d1
Source dataset
uspto-grants-2016_07
Patent number
US09394302B2

Reaction notes

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