Sodium hydride → 6-(2-methoxy-4-(5-methyloxazol-2-yl)phenyl)-N-methyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)pyridazin-3-amine

HRID 1027169Notes

Reaction equation

HRID 1027169 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:12]=[CH:13][C:14]=1[C:15]1[N:16]=[N:17][C:18]([N:21]([CH3:32])[CH:22]2[CH2:27][C:26]([CH3:29])([CH3:28])[NH:25][C:24]([CH3:31])([CH3:30])[CH2:23]2)=[CH:19][CH:20]=1)[C:6]([NH:8][CH2:9][C:10]#[CH:11])=[O:7].[H-].[Na+]>O1CCOCC1.CCOC(C)=O.O>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:6]2[O:7][C:10]([CH3:11])=[CH:9][N:8]=2)[CH:12]=[CH:13][C:14]=1[C:15]1[N:16]=[N:17][C:18]([N:21]([CH3:32])[CH:22]2[CH2:23][C:24]([CH3:31])([CH3:30])[NH:25][C:26]([CH3:28])([CH3:29])[CH2:27]2)=[CH:19][CH:20]=1

Participants

6

Reactant 2

HCID 24758Sodium hydrideHCID 86710561HCID 86710561, compound

Product 1

HCID 867105626-(2-methoxy-4-(5-methyloxazol-2-yl)phenyl)-N-methyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)pyridazin-3-amineYield 55.3%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Procedure

To a solution of 3-methoxy-4-(6-(methyl(2,2,6,6-tetramethylpiperidin-4-yl)amino)pyridazin-3-yl)-N-(prop-2-yn-1-yl)benzamide (190 mg, 0.44 mmol) in dioxane (8 mL) was added 60% wt NaH (52 mg, 1.31 mmol). The reaction was refluxed for 5 h, then cooled to RT and diluted in EtOAc and water. The organic layer was washed with water, brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude material was purified via HPLC to give 6-(2-methoxy-4-(5-methyloxazol-2-yl)phenyl)-N-methyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)pyridazin-3-amine (106 mg). LCMS Rt=0.97 min (condition B); MS (M+1)=436.3. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 8.08 (d, J=8.1 Hz, 1H), 7.85 (d, J=9.6 Hz, 1H), 7.72 (dd, J=8.1, 1.5 Hz, 1H), 7.65 (d, J=1.3 Hz, 1H), 6.88 (s, 1H), 6.82 (d, J=9.6 Hz, 1H), 5.20-5.39 (m, 1H), 3.96 (s, 3H), 2.99 (s, 3H), 2.43 (s, 3H), 1.74 (dd, J=12.4, 3.3 Hz, 2H), 1.47-1.59 (m, 2H), 1.43 (s, 6H), 1.31 (s, 6H).

Workup

  1. temperatureThe reaction was refluxed for 5 h
  2. washThe organic layer was washed with water, brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe crude material was purified via HPLC

Sources & evidence

ORD record
ord-009379237b034fe9991b91c2230f3203
Source dataset
uspto-grants-2014_05
Patent number
US08729263B2

Reaction notes

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