Methanesulfonic Acid → N-[3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-4-(trifluoromethyl)pyrimidin-2-amine

HRID 410395Notes

Reaction equation

HRID 410395 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([CH:6]=[C:7]([B:9]2[O:13][C:12]([CH3:15])([CH3:14])[C:11]([CH3:17])([CH3:16])[O:10]2)[CH:8]=1)[NH2:5].Cl[C:19]1[N:24]=[C:23]([C:25]([F:28])([F:27])[F:26])[CH:22]=[CH:21][N:20]=1.O1CCOCC1.CS(O)(=O)=O>C(OCC)(=O)C>[F:1][C:2]1[CH:3]=[C:4]([NH:5][C:19]2[N:24]=[C:23]([C:25]([F:28])([F:27])[F:26])[CH:22]=[CH:21][N:20]=2)[CH:6]=[C:7]([B:9]2[O:13][C:12]([CH3:15])([CH3:14])[C:11]([CH3:17])([CH3:16])[O:10]2)[CH:8]=1

Participants

6

Reactant 4

HCID 6395Methanesulfonic AcidHCID 312751,4-DioxaneHCID 27739122-Chloro-4-(trifluoromethyl)pyrimidineHCID 597700393-Fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline

Product 1

HCID 58456086N-[3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-4-(trifluoromethyl)pyrimidin-2-amineYield 76.4%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
100 °C

Procedure

To a flask containing 3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (3.3 g, 14.00 mmol) and 2-chloro-4-(trifluoromethyl)pyrimidine (2.94 g, 16.10 mmol) were added dioxane (44 mL) and methanesulfonic acid (1.55 g, 16.10 mmol) and the reaction was heated at 100° C. overnight. The reaction was cooled, diluted with ethyl acetate, washed with water, dried over magnesium sulfate, filtered and concentrated. Flash chromatography was used for purification to yield N-[3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-4-(trifluoromethyl)pyrimidin-2-amine (4.10 g, 10.70 mmol, 76% yield). MS ESI: [M+H]+ m/z 384. 1H NMR (500 MHz, DMSO-d6) δ 10.41 (s, 1H), 8.85 (d, J=4.9, 1H), 7.92 (dt, J=2.3, 12.1, 1H), 7.77 (d, J=1.5, 1H), 7.32 (d, J=4.9, 1H), 6.98 (dd, J=2.2, 8.4, 1H), 1.28 (s, 12H).

Workup

  1. temperatureThe reaction was cooled
  2. washwashed with water
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customFlash chromatography was used for purification

Sources & evidence

ORD record
ord-a96f0386f42949339aac42544b7c1c35
Source dataset
uspto-grants-2014_06
Patent number
US08759366B2

Reaction notes

Loading…