Potassium Carbonate → 1-(2,4-Difluoro-benzyl)-6-[5-(6-methylsulfanyl-pyridin-3-yl)-thiophen-2-yl]-2-oxo-4-trifluoromethyl-1,2-dihydro-pyridine-3-carbonitrile

HRID 906859Notes

Reaction equation

HRID 906859 reaction equation
Br[C:2]1[S:6][C:5]([C:7]2[N:12]([CH2:13][C:14]3[CH:19]=[CH:18][C:17]([F:20])=[CH:16][C:15]=3[F:21])[C:11](=[O:22])[C:10]([C:23]#[N:24])=[C:9]([C:25]([F:28])([F:27])[F:26])[CH:8]=2)=[CH:4][CH:3]=1.[CH3:29][S:30][C:31]1[CH:36]=[CH:35][C:34](B2OC(C)(C)C(C)(C)O2)=[CH:33][N:32]=1.C(=O)([O-])[O-].[K+].[K+]>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.COCCOC.O>[F:21][C:15]1[CH:16]=[C:17]([F:20])[CH:18]=[CH:19][C:14]=1[CH2:13][N:12]1[C:7]([C:5]2[S:6][C:2]([C:34]3[CH:33]=[N:32][C:31]([S:30][CH3:29])=[CH:36][CH:35]=3)=[CH:3][CH:4]=2)=[CH:8][C:9]([C:25]([F:28])([F:27])[F:26])=[C:10]([C:23]#[N:24])[C:11]1=[O:22]

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 116053146-(5-Bromo-thiophen-2-yl)-1-(2,4-difluoro-benzyl)-2-oxo-4-trifluoromethyl-1,2-dihydro-pyridine-3-carbonitrileHCID 447551912-(Methylsulfanyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine

Product 1

HCID 597266241-(2,4-Difluoro-benzyl)-6-[5-(6-methylsulfanyl-pyridin-3-yl)-thiophen-2-yl]-2-oxo-4-trifluoromethyl-1,2-dihydro-pyridine-3-carbonitrileYield 93.2%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 18180031Water 1,2-dimethoxyethaneSolvent

Conditions

Temperature
80 °C

Procedure

6-(5-Bromo-thiophen-2-yl)-1-(2,4-difluoro-benzyl)-2-oxo-4-trifluoromethyl-1,2-dihydro-pyridine-3-carbonitrile (270 mg, 0.57 mmol), 2-methylsulfanyl-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)pyridine (214 mg, 0.85 mmol), potassium carbonate (236 mg, 1.71 mmol), and tetrakis(triphenylphosphine)palladium (0) (66 mg, 0.057 mmol) were mixed with 6 ml 9:1 DME/H2O (v/v), then heated at 80° C. overnight. All solvent was removed in vacuo. The crude product was purified by column chromatography on silica gel (10→40% EtOAC/Hexane, 0.25% Et3N in hexane) to give 1-(2,4-difluoro-benzyl)-6-[5-(6-methylsulfanyl-pyridin-3-yl)-thiophen-2-yl]-2-oxo-4-trifluoromethyl-1,2-dihydro-pyridine-3-carbonitrile as an orange solid (276 mg, 93% yield). 1H-NMR (400 MHz, CDCl3): δ 2.61 (s, 3H), 5.45 (s, 2H), 6.66 (s, 1H), 6.82 (m, 1H), 6.88 (m, 1H), 7.09 (m, 1H), 7.12 (d, 1H, J=3.9), 7.27 (m, 2H, mixed with CDCl3), 7.64 (dd, 1H, J=2.4, J=8.4), 8.67 (dd, 1H, J=2.4, J=0.8).

Workup

  1. customAll solvent was removed in vacuo
  2. customThe crude product was purified by column chromatography on silica gel (10→40% EtOAC/Hexane, 0.25% Et3N in hexane)

Sources & evidence

ORD record
ord-ba08a9daa11c4b86a76bd04eff28084f
Source dataset
uspto-grants-2011_09
Patent number
US08013001B2

Reaction notes

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