Tetrahydrofuran → 5-(3-Fluoro-2'-(methylsulfonyl)-[1,1'-biphenyl]-4-yl)pyridin-2-amine

HRID 1523900Notes

Reaction equation

Cl[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:9]=[CH:10][C:11]([NH2:14])=[N:12][CH:13]=2)=[C:4]([F:15])[CH:3]=1.[CH3:16][S:17]([C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=1B(O)O)(=[O:19])=[O:18].C1COCC1.[O-]P([O-])([O-])=O.[K+].[K+].[K+]>CCOC(C)=O.[Pd+2]>[F:15][C:4]1[CH:3]=[C:2]([C:21]2[CH:22]=[CH:23][CH:24]=[CH:25][C:20]=2[S:17]([CH3:16])(=[O:19])=[O:18])[CH:7]=[CH:6][C:5]=1[C:8]1[CH:9]=[CH:10][C:11]([NH2:14])=[N:12][CH:13]=1

Participants

Conditions

Temperature: 60 °C

Procedure

5-(4-Chloro-2-fluorophenyl)pyridin-2-amine (100 mg, 0.449 mmol), 2-(methylsulfonyl)phenylboronic acid (112 mg, 0.561 mmol), and chloro(2-dicyclohexyl-phosphino-2′,4′,6′-triisopropyl-1,1′-biphenyl)[2-(2-aminoethyl)phenyl)]palladium(II) (33 mg, 0.045 mmol) were placed in a sealable reaction tube under nitrogen. THF (2 mL, sparged with nitrogen) and K3PO4 (2 mL, 0.5 M sparged with nitrogen) were added, and the reaction vessel was sealed and heated at 60° Celsius for 16 hours with vigorous stirring. The mixture was cooled to rt, diluted with EtOAc, and washed with 2 M K2CO3, then dried and concentrated to dryness. The residue was subjected to FCC to provide the title compound (45 mg, 29%). MS (CI): mass calcd. for C18H15FN2O2S, 342.08; m/z found, 343.0 [M+H]+. 1H NMR (500 MHz, CDCl3) δ 8.38-8.31 (s, 1H), 8.29-8.22 (m, 1H), 7.77-7.71 (m, 1H), 7.71-7.65 (m, 1H), 7.64-7.57 (m, 1H), 7.52-7.45 (m, 1H), 7.42-7.37 (m, 1H), 7.36-7.27 (m, 2H), 6.64-6.59 (m, 1H), 4.66-4.51 (s, 2H), 2.81-2.69 (s, 2H).

Workup

customthe reaction vessel was sealed
temperatureThe mixture was cooled to rt
washwashed with 2 M K2CO3
customdried
concentrationconcentrated to dryness

Sources & evidence

ORD record: ord-53f0b456b6a04fa2b5d4f777e51a0e10
Source dataset: uspto-grants-2015_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09079866B2

Reaction notes

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