Water → 4-{6-Amino-7-[(R)-1-(2,6-dichloro-3-fluorophenyl)ethoxy]furo[3,2-c]pyridin-3-yl}thiophene-2-carboxylic Acid

HRID 912007Notes

Reaction equation

Br[C:2]1[C:6]2[CH:7]=[N:8][C:9]([NH2:23])=[C:10]([O:11][C@@H:12]([C:14]3[C:19]([Cl:20])=[CH:18][CH:17]=[C:16]([F:21])[C:15]=3[Cl:22])[CH3:13])[C:5]=2[O:4][CH:3]=1.[C:24]([C:27]1[S:28][CH:29]=[C:30](B(O)O)[CH:31]=1)([OH:26])=[O:25].C(=O)([O-])[O-].[K+].[K+].O1CCOCC1.O.ClCCl>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]>[NH2:23][C:9]1[N:8]=[CH:7][C:6]2[C:2]([C:30]3[CH:31]=[C:27]([C:24]([OH:26])=[O:25])[S:28][CH:29]=3)=[CH:3][O:4][C:5]=2[C:10]=1[O:11][C@@H:12]([C:14]1[C:19]([Cl:20])=[CH:18][CH:17]=[C:16]([F:21])[C:15]=1[Cl:22])[CH3:13]

Participants

Conditions

Temperature: 90 °C

Procedure

3-Bromo-7-[(R)-1-(2,6-dichloro-3-fluorophenyl)ethoxy]furo[3,2-c]pyridin-6-ylamine (180.0 mg, 0.4285 mmol), 2-carboxythiophene-4-boronic acid (147 mg, 0.857 mmol), potassium carbonate (178 mg, 1.28 mmol), 1,4-dioxane (4.2 mL, 54 mmol), H2O (1.2 mL, 67 mmol) and [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II), complex with dichloromethane (1:1) (20 mg, 0.02 mmol) were mixed and heated in a microwave reactor at 90° C. for 20 minutes. The crude was passed through Thiol-SPE to remove palladium. MS (ES+): m/z 467.02/469.02 (100/70) [MH+]. HPLC: tR=0.85 min (HPLC-ACQUITY, Analytical). 1H NMR (400 MHz, DMSO-d6): δ=1.84 (d, J=6.8 Hz, 3H), 5.63 (s, 2H), 6.26 (q, J=6.8 Hz, 1H), 7.45 (t, J=8.7 Hz, 1H), 7.53 (dd, J=9.0, 4.9 Hz, 1H), 7.76 (br. s., 1H), 7.94 (br. s., 1H), 8.20 (s, 1H), 8.40 (s, 1H).

Workup

customto remove palladium

Sources & evidence

ORD record: ord-b0ed2e567b3d452ebd7fa500bb03b499
Source dataset: uspto-grants-2011_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08022206B2

Reaction notes

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