Ethyl Acetate → 3-Chloro-N-[2,6-dimethyl-3-(3-pyridinyl)thieno[2,3-b]pyridin-4-yl]benzenesulfonamide

HRID 573611Notes

Reaction equation

HRID 573611 reaction equation
Br[C:2]1[C:10]2[C:5](=[N:6][C:7]([CH3:22])=[CH:8][C:9]=2[NH:11][S:12]([C:15]2[CH:20]=[CH:19][CH:18]=[C:17]([Cl:21])[CH:16]=2)(=[O:14])=[O:13])[S:4][C:3]=1[CH3:23].[N:24]1[CH:29]=[CH:28][CH:27]=[C:26](B(O)O)[CH:25]=1.C(=O)([O-])[O-].[K+].[K+].C(OCC)(=O)C>O1CCOCC1.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:21][C:17]1[CH:16]=[C:15]([S:12]([NH:11][C:9]2[CH:8]=[C:7]([CH3:22])[N:6]=[C:5]3[S:4][C:3]([CH3:23])=[C:2]([C:26]4[CH:25]=[N:24][CH:29]=[CH:28][CH:27]=4)[C:10]=23)(=[O:14])=[O:13])[CH:20]=[CH:19][CH:18]=1

Participants

8

Reactant 4

HCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 27343783-Pyridinylboronic acidHCID 68324076N-(3-bromo-2,6-dimethylthieno[2,3-b]pyridin-4-yl)-3-chlorobenzenesulfonamide

Product 1

HCID 683238923-Chloro-N-[2,6-dimethyl-3-(3-pyridinyl)thieno[2,3-b]pyridin-4-yl]benzenesulfonamideYield 32.8%

Reagents, catalysts & solvents 3

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

Conditions

Temperature
120 °C

Procedure

Under nitrogen, N-(3-bromo-2,6-dimethylthieno[2,3-b]pyridin-4-yl)-3-chlorobenzenesulfonamide (100 mg, 0.232 mmol) (Example 61) was dissolved in 1,4-dioxane (1.5 mL) and water (0.7 mL). 3-Pyridinylboronic acid (42.7 mg, 0.347 mmol), tetrakis(triphenylphosphine)palladium(0) (26.8 mg, 0.023 mmol) and potassium carbonate (96 mg, 0.695 mmol) were added and the mixture heated in a microwave at 120° C. for 15 min. Ethyl acetate (10 mL) was added and the mixture washed with water (2×5 mL). The organic layer was then dried over MgSO4, filtered and the solvent removed in vacuo. Purification by chromatography on silica gel, eluting with a gradient of 5% MeOH in DCM, was followed by further purification by MDAP (basic conditions), to afford the title compound (32.7 mg). LCMS (A) m/z: 430 [M+1]+, Rt 0.83 min (basic), Rt 0.85 min (acidic).

Workup

  1. washthe mixture washed with water (2×5 mL)
  2. dry with materialThe organic layer was then dried over MgSO4
  3. filtrationfiltered
  4. customthe solvent removed in vacuo
  5. customPurification by chromatography on silica gel
  6. washeluting with a gradient of 5% MeOH in DCM
  7. customwas followed by further purification by MDAP (basic conditions)

Sources & evidence

ORD record
ord-e98a3319376740918568b32660908107
Source dataset
uspto-grants-2015_05
Patent number
US09029545B2

Reaction notes

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