Ethyl 2-(5-(5-chloro-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophen-2-yl)-2-hydroxyacetate → ethyl 2-(5-(5-chloro-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophen-2-yl)-2-oxoacetate

HRID 1484967Notes

Reaction equation

HRID 1484967 reaction equation
[Cl:1][C:2]1[C:3]([NH:20][C:21]2[CH:25]=[C:24]([CH:26]3[CH2:28][CH2:27]3)[NH:23][N:22]=2)=[N:4][C:5]([C:8]2[S:12][C:11]([CH:13]([OH:19])[C:14]([O:16][CH2:17][CH3:18])=[O:15])=[CH:10][CH:9]=2)=[N:6][CH:7]=1>CS(C)=O.C(OCC)(=O)C>[Cl:1][C:2]1[C:3]([NH:20][C:21]2[CH:25]=[C:24]([CH:26]3[CH2:28][CH2:27]3)[NH:23][N:22]=2)=[N:4][C:5]([C:8]2[S:12][C:11]([C:13](=[O:19])[C:14]([O:16][CH2:17][CH3:18])=[O:15])=[CH:10][CH:9]=2)=[N:6][CH:7]=1

Participants

4

Reactant 1

HCID 58169421Ethyl 2-(5-(5-chloro-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophen-2-yl)-2-hydroxyacetate2×

Product 1

HCID 58169174ethyl 2-(5-(5-chloro-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophen-2-yl)-2-oxoacetateYield 90.8%

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of Ethyl 2-(5-(5-chloro-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophen-2-yl)-2-hydroxyacetate (Compound 191), (100 mg, 0.24 mmol, 1.0 eq) in DMSO (10 mL) was added IBX (168 mg, 0.6 mmol, 2.5 eq). The reaction mixture was stirred at room temperature overnight. The mixture was diluted with ethyl acetate, washed (brine), dried (Na2SO4), filtered and concentrated to give a residue, the residue was purified by silica gel column chromatography (PE:EA=2:1) to give ethyl 2-(5-(5-chloro-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophen-2-yl)-2-oxoacetate (Compound 189) (90 mg, 90.8%). LC-MS (m/z): 418.0 [M+H]+. 1H NMR (400 MHz, DMSO-d6): δ 0.75-0.79 (m, 2H), 0.99-1.01 (m, 2H), 1.35 (t, J=7.0 Hz, 3H), 1.93-1.97 (m, 1H), 4.37-4.42 (m, 2H), 6.43 (s, 1H), 7.89 (d, J=3.6 Hz, 1H), 8.14 (d, J=3.6 Hz, 1H), 8.51 (s, 1H), 9.50 (s, 1H), 12.35 (s, 1H).

Workup

  1. washwashed (brine)
  2. dry with materialdried (Na2SO4)
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customto give a residue
  6. customthe residue was purified by silica gel column chromatography (PE:EA=2:1)

Sources & evidence

ORD record
ord-cc711be57e8f4636b6cd3688a11893e1
Source dataset
uspto-grants-2016_08
Patent number
US09422271B2

Reaction notes

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