Potassium Carbonate → 3-Chloro-N-[2-(4-isoquinolinyl)-3,6-dimethylthieno[2,3-b]pyridin-4-yl]benzenesulfonamide

HRID 573655

Reaction equation

Br[C:2]1[S:22][C:5]2=[N:6][C:7]([CH3:21])=[CH:8][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[C:3]=1[CH3:23].[CH:24]1[C:33]2[C:28](=[CH:29][CH:30]=[CH:31][CH:32]=2)[C:27](B(O)O)=[CH:26][N:25]=1.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[Cl:20][C:16]1[CH:15]=[C:14]([S:11]([NH:10][C:9]2[CH:8]=[C:7]([CH3:21])[N:6]=[C:5]3[S:22][C:2]([C:27]4[C:28]5[C:33](=[CH:32][CH:31]=[CH:30][CH:29]=5)[CH:24]=[N:25][CH:26]=4)=[C:3]([CH3:23])[C:4]=23)(=[O:13])=[O:12])[CH:19]=[CH:18][CH:17]=1

Participants

Conditions

Temperature: 100 °C

Procedure

To a solution of N-(2-bromo-3,6-dimethylthieno[2,3-b]pyridin-4-yl)-3-chlorobenzenesulfonamide (Example 77) (100 mg, 0.232 mmol) in 1,4-dioxane (2 mL) and water (1 mL) was added 4-isoquinolinylboronic acid (40.1 mg, 0.232 mmol), bis(triphenylphosphine)palladium(II) chloride (16.26 mg, 0.023 mmol) and potassium carbonate (112 mg, 0.811 mmol) and the mixture heated at 100° C. for 1 h using a microwave reactor. The mixture was then filtered through celite, washing with ethyl acetate (30 mL) and the filtrate evaporated to dryness. The residue was then purified by MDAP (acidic conditions), to afford the title compound (41.45 mg). LCMS (A) m/z: 480 [M+1]+, Rt 1.13 min (acidic).

Workup

filtrationThe mixture was then filtered through celite
washwashing with ethyl acetate (30 mL)
customthe filtrate evaporated to dryness
customThe residue was then purified by MDAP (acidic conditions)

Sources & evidence

ORD record: ord-df96f4948d40466e8266fbf0709b341c
Source dataset: uspto-grants-2015_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09029545B2

Linked notes

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