Potassium Carbonate → 3-(1,1-Dioxidotetrahydro-2H-thiopyran-3-yl)-5-(2-furanyl)-1H-indole-7-carboxamide

HRID 387368Notes

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[CH2:19][CH2:18][CH2:17][S:16](=[O:21])(=[O:20])[CH2:15]1.[O:22]1[CH:26]=[CH:25][CH:24]=[C:23]1B(O)O.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:20]=[S:16]1(=[O:21])[CH2:17][CH2:18][CH2:19][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[O:22][CH:26]=[CH:25][CH:24]=4)[CH:3]=3)[NH:7][CH:6]=2)[CH2:15]1

Participants

Conditions

Temperature: 100 °C

Procedure

5-Bromo-3-(1,1-dioxidotetrahydro-2H-thiopyran-3-yl)-1H-indole-7-carboxamide (0.050, 0.135 mol) and 2-furanylboronic acid (0.020, 0.175 mol) was dissolved in a 6:1 solution of 1,4 dioxane (3 L)/water (0.5 L) in a 20 L microwave reaction vessel. Potassium carbonate (0.093, 0.673 mol) was added and the solution was degassed with Nitrogen. PdCl2(dppf)2 (0.017, 0.023 mol) was added and the reaction was heated in a microwave at 100° C. for 20 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/Water with 0.1% NH4OH. The desired fractions were concentrated, giving 0.018 g (37%) of the title compound.

Workup

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

Sources & evidence

ORD record: ord-a159eee488254896a7eb3d91344ba411
Source dataset: uspto-grants-2013_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08372875B2

Reaction notes

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