Toluene → N-(6-Methyl-4'-nitrobiphenyl-3-yl)-3-(trifluoromethyl)benzamide

HRID 1894876Notes

Reaction equation

HRID 1894876 reaction equation
I[C:2]1[CH:3]=[C:4]([NH:9][C:10](=[O:21])[C:11]2[CH:16]=[CH:15][CH:14]=[C:13]([C:17]([F:20])([F:19])[F:18])[CH:12]=2)[CH:5]=[CH:6][C:7]=1[CH3:8].CC1(C)C(C)(C)OB([C:30]2[CH:35]=[CH:34][C:33]([N+:36]([O-:38])=[O:37])=[CH:32][CH:31]=2)O1.C1(C)C=CC=CC=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.C(O)C>[CH3:8][C:7]1[C:2]([C:30]2[CH:35]=[CH:34][C:33]([N+:36]([O-:38])=[O:37])=[CH:32][CH:31]=2)=[CH:3][C:4]([NH:9][C:10](=[O:21])[C:11]2[CH:16]=[CH:15][CH:14]=[C:13]([C:17]([F:20])([F:19])[F:18])[CH:12]=2)=[CH:5][CH:6]=1

Participants

7

Reactant 4

HCID 1140TolueneHCID 11430Potassium CarbonateHCID 27735554,4,5,5-Tetramethyl-2-(4-nitrophenyl)-1,3,2-dioxaborolaneHCID 7925506N-(3-iodo-4-methylphenyl)-3-(trifluoromethyl)benzamide

Product 1

HCID 69273794N-(6-Methyl-4'-nitrobiphenyl-3-yl)-3-(trifluoromethyl)benzamideYield 95.79%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolvent

Conditions

Temperature
90 °C

Procedure

To N-(3-iodo-4-methylphenyl)-3-(trifluoromethyl)benzamide (400.0 mg, 0.99 mmol) was added 4,4,5,5-tetramethyl-2-(4-nitrophenyl)-1,3,2-dioxaborolane (270 mg, 1.1 mmol) followed by toluene (8.2 mL), then ethanol (1.15 mL), and K2CO3 (270 mg, 2.0 mmol in 1.1 mL water). The reaction was degassed with N2, then tetrakis(triphenylphosphine)palladium(0) (60 mg, 0.05 mmol) was added. The reaction was degassed again, and then heated at reflux under N2 atmosphere at 90° C. until LCMS and TLC indicated complete reaction, about 16 hours. The reaction was then cooled to ambient temperature, transferred to a separatory funnel and partitioned between water and EtOAc. The phases were separated and the organic phase was washed with water, then saturated aqueous NaCl, dried (MgSO4) and then evaporated to dryness to leave the crude product, which was purified by column chromatography to give the product (379 mg, 95.79%). 1H NMR (400 MHz, CDCl3): δ 8.29 (m, 2H), 8.12 (s, 1H), 8.07 (d, 1H), 7.82 (m, 2H), 7.5-7.7 (m, 5H), 7.33 (d, 1H), 2.26 (s, 3H). MS (EI) m/z=401 (M+H).

Workup

  1. customThe reaction was degassed with N2
  2. customThe reaction was degassed again
  3. temperatureheated
  4. customreaction, about 16 hours
  5. temperatureThe reaction was then cooled to ambient temperature
  6. customtransferred to a separatory funnel
  7. custompartitioned between water and EtOAc
  8. customThe phases were separated
  9. washthe organic phase was washed with water
  10. dry with materialsaturated aqueous NaCl, dried (MgSO4)
  11. customevaporated to dryness
  12. customto leave the crude product, which
  13. customwas purified by column chromatography

Sources & evidence

ORD record
ord-798e36d2ea334c11b5e8b65f01755d49
Source dataset
uspto-grants-2013_08
Patent number
US08513270B2

Reaction notes

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