Potassium Carbonate → HCID 89647949, compound

HRID 929447Notes

Reaction equation

HRID 929447 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([N+:9]([O-:11])=[O:10])[CH:5]=[CH:6][C:7]=1F.[CH:12]1([C:18]2[CH:23]=[CH:22][C:21]([OH:24])=[CH:20][CH:19]=2)[CH2:17][CH2:16][CH2:15][CH2:14][CH2:13]1.C([O-])([O-])=O.[K+].[K+]>CS(C)=O>[CH:12]1([C:18]2[CH:19]=[CH:20][C:21]([O:24][C:7]3[CH:6]=[CH:5][C:4]([N+:9]([O-:11])=[O:10])=[CH:3][C:2]=3[F:1])=[CH:22][CH:23]=2)[CH2:13][CH2:14][CH2:15][CH2:16][CH2:17]1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 143274-CyclohexylphenolHCID 1230531,2-Difluoro-4-nitrobenzene

Product 1

HCID 89647949HCID 89647949, compoundYield 99.4%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

Following procedure A, 3,4-difluoronitrobenzene (509 mg, 3.20 mmol, 1.00 eq) and 4-cyclohexylphenol (691 mg, 3.93 mmol, 1.23 eq) were dissolved in DMSO (6 mL). Anhydrous K2CO3 (664 mg, 4.81 mmol, 1.50 eq) was added and the reaction mixture was stirred at room temperature for 23 h. After extraction with Et2O, the crude product was purified by flash column chromatography (SiO2; EtOAc/petrolether 1:50) to afford the title compound as pale yellow solid (1002 mg, 3.18 mmol, 99% yield). Rf=0.51 (EtOAc/PE 1:20). HRMS (ESI) calcd. for C18H19FNO3+ [M+H]+ 316.1343. found: 316.1348. 1H NMR (400 MHz, CDCl3) δ 8.09 (dd, J=10.3, 2.7 Hz, 1H, aromatic H), 7.97 (ddd, J=9.1, 2.7, 1.4 Hz, 1H, aromatic H), 7.33-7.22 (m, 2H, aromatic H), 7.08-6.99 (m, 2H, aromatic H), 6.96 (dd, J=9.1, 8.0 Hz, 1H, aromatic H), 2.58-251 (m, 1H, cyclohexyl H), 1.98-1.73 (m, 5H, cyclohexyl H), 1.52-1.20 (m, 5H, cyclohexyl H). 13C NMR (101 MHz, CDCl3) δ 153.35, 152.51, 152.01, 151.90, 150.84, 145.68, 142.39, 142.32, 128.67, 120.70, 120.66, 119.73, 117.70, 117.68, 113.30, 113.08, 44.09, 34.69, 26.97, 26.21.

Workup

  1. extractionAfter extraction with Et2O
  2. customthe crude product was purified by flash column chromatography (SiO2; EtOAc/petrolether 1:50)

Sources & evidence

ORD record
ord-b103c45c91524299aa593d4706e32ac0
Source dataset
uspto-grants-2016_03
Patent number
US09296682B2

Reaction notes

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