Potassium Carbonate → 3-(1,1-Dioxidotetrahydro-3-thienyl)-5-(3-furanyl)-1H-indole-7-carboxamide

HRID 387363Notes

Reaction equation

Br[C:2]1[CH:3]=[C:4]2[C:8](=[C:9]([C:11]([NH2:13])=[O:12])[CH:10]=1)[NH:7][CH:6]=[C:5]2[CH:14]1[CH2:18][CH2:17][S:16](=[O:20])(=[O:19])[CH2:15]1.[O:21]1[CH:25]=[CH:24][C:23](B(O)O)=[CH:22]1.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[O:19]=[S:16]1(=[O:20])[CH2:17][CH2:18][CH:14]([C:5]2[C:4]3[C:8](=[C:9]([C:11]([NH2:13])=[O:12])[CH:10]=[C:2]([C:23]4[CH:24]=[CH:25][O:21][CH:22]=4)[CH:3]=3)[NH:7][CH:6]=2)[CH2:15]1

Participants

Conditions

Temperature: 100 °C

Procedure

5-bromo-3-(1,1-dioxidotetrahydro-3-thienyl)-1H-indole-7-carboxamide (0.050 g, 0.140 mmol) and 3-furanylboronic acid (0.020 g, 0.182 mmol) was dissolved in a 6:1 solution of 1,4 dioxane/water in a 20 mL microwave reaction vessel. Potassium carbonate (0.097 g, 0.70 mmol) was added and the solution was degassed with Argon. PdCl2(dppf) (0.017 g, 0.024 mmol) was added and the reaction was heated in a microwave at 100° C. for 10 min. The solution was passed through a StratoSphere SPE PL-Thiol MP SPE column to remove palladium and purified on Gilson preparative HPLC using Acetonitrile/0.1% NH4OH/H20. The desired fractions were concentrated, giving 0.017 g (36%) of the title compound.

Workup

customthe solution was degassed with Argon
customto remove palladium
custompurified on Gilson preparative HPLC
concentrationThe desired fractions were concentrated

Sources & evidence

ORD record: ord-3e7515f72a634b389406e6c4ddb674b7
Source dataset: uspto-grants-2013_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08372875B2

Reaction notes

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