Potassium Carbonate → Ethyl 4-{[(3-chlorophenyl)sulfonyl]amino}-6-methyl-2-(1H-pyrazol-4-yl)thieno[2,3-b]pyridine-5-carboxylate

HRID 573593Notes

Reaction equation

HRID 573593 reaction equation
Br[C:2]1[S:27][C:5]2=[N:6][C:7]([CH3:26])=[C:8]([C:21]([O:23][CH2:24][CH3:25])=[O:22])[C:9]([NH:10][S:11]([C:14]3[CH:19]=[CH:18][CH:17]=[C:16]([Cl:20])[CH:15]=3)(=[O:13])=[O:12])=[C:4]2[CH:3]=1.O(C([N:35]1[CH:39]=[C:38](B(O)O)[CH:37]=[N:36]1)=O)C(C)(C)C.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.CN(C=O)C.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:20][C:16]1[CH:15]=[C:14]([S:11]([NH:10][C:9]2[C:8]([C:21]([O:23][CH2:24][CH3:25])=[O:22])=[C:7]([CH3:26])[N:6]=[C:5]3[S:27][C:2]([C:38]4[CH:39]=[N:35][NH:36][CH:37]=4)=[CH:3][C:4]=23)(=[O:13])=[O:12])[CH:19]=[CH:18][CH:17]=1

Participants

8

Reactant 3

HCID 11430Potassium CarbonateHCID 441186751-tert-Butoxycarbonyl-1H-pyrazole-4-boronic acidHCID 68323811Ethyl 2-bromo-4-{[(3-chlorophenyl)sulfonyl]amino}-6-methylthieno[2,3-b]pyridine-5-carboxylate

Product 1

HCID 68380155Ethyl 4-{[(3-chlorophenyl)sulfonyl]amino}-6-methyl-2-(1H-pyrazol-4-yl)thieno[2,3-b]pyridine-5-carboxylate

Reagents, catalysts & solvents 4

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
110 °C

Procedure

A mixture of ethyl 2-bromo-4-{[(3-chlorophenyl)sulfonyl]amino}-6-methylthieno[2,3-b]pyridine-5-carboxylate (Description 72) (402 mg, 0.82 mmol), 1-tert-butoxylcarbonyl-1H-pyrazole-4-boronic acid, pinacol ester (483 mg, 1.64 mmol) and tetrakis(triphenylphosphine)palladium(0) (47.4 mg, 0.041 mmol) and potassium carbonate (340 mg, 2.46 mmol) in 1,4-dioxane (3 mL), DMF (1.5 mL) and water (0.75 mL) was heated at 110° C. for ca. 2 h. After cooling to RT, the reaction mixture was filtered through celite and the filtrate was concentrated. Purification by chromatography on silica, eluting with a gradient of 0-100% ethyl acetate in DCM, afforded the title compound (355 mg). LCMS (A) m/z: 477 [M+1]+, Rt 1.18 min (acidic).

Workup

  1. temperatureAfter cooling to RT
  2. filtrationthe reaction mixture was filtered through celite
  3. concentrationthe filtrate was concentrated
  4. customPurification by chromatography on silica
  5. washeluting with a gradient of 0-100% ethyl acetate in DCM

Sources & evidence

ORD record
ord-e46268e3b17142e2bbc12cf07b697aa3
Source dataset
uspto-grants-2015_05
Patent number
US09029545B2

Reaction notes

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