Potassium Phosphate, Tribasic → (1-(3-methoxy-4-(6-(methyl(2,2,6,6-tetramethylpiperidin-4-yl)amino)pyridazin-3-yl)phenyl)-1H-pyrazol-4-yl)methanol

HRID 1027172Notes

Reaction equation

HRID 1027172 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([N:18]2[CH:22]=[C:21]([CH2:23][OH:24])[CH:20]=[N:19]2)[CH:6]=[CH:7][C:8]=1B1OC(C)(C)C(C)(C)O1.Cl[C:26]1[N:31]=[N:30][C:29]([N:32]([CH3:43])[CH:33]2[CH2:38][C:37]([CH3:40])([CH3:39])[NH:36][C:35]([CH3:42])([CH3:41])[CH2:34]2)=[CH:28][CH:27]=1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].COC1C=CC=C(OC)C=1C1C=CC=CC=1P(C1CCCCC1)C1CCCCC1>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O.O1CCOCC1>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([N:18]2[CH:22]=[C:21]([CH2:23][OH:24])[CH:20]=[N:19]2)[CH:6]=[CH:7][C:8]=1[C:26]1[N:31]=[N:30][C:29]([N:32]([CH3:43])[CH:33]2[CH2:38][C:37]([CH3:39])([CH3:40])[NH:36][C:35]([CH3:42])([CH3:41])[CH2:34]2)=[CH:28][CH:27]=1

Participants

8

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 867105396-chloro-N-methyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)pyridazin-3-amine2×HCID 86710566(1-(3-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1H-pyrazol-4-yl)methanol

Product 1

HCID 86710565(1-(3-methoxy-4-(6-(methyl(2,2,6,6-tetramethylpiperidin-4-yl)amino)pyridazin-3-yl)phenyl)-1H-pyrazol-4-yl)methanol

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

To a microwave vial was added (1-(3-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1H-pyrazol-4-yl)methanol (87 mg, 0.26 mmol), 6-chloro-N-methyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)pyridazin-3-amine Intermediate 1-1 (74.5 mg, 0.26 mmol), potassium phosphate (168 mg, 0.79 mmol), Pd2(dba)3 (12.06 mg, 0.01 mmol), and SPhos (10.82 mg, 0.03 mmol), followed by addition of 1,4-dioxane (5 mL)/H2O (1 mL). The vial was purged with N2 for 10 min and the reaction mixture was heated at 100° C. in the microwave for one hour. The reaction mixture was concentrated in vacuo. The crude material was adjusted to pH 3 using 1 M HCl aqueous solution and loaded on an SCX column. The crude material was washed with methanol then eluted with 2 N ammonia in methanol. The product-containing fractions were concentrated to afford (1-(3-methoxy-4-(6-(methyl(2,2,6,6-tetramethylpiperidin-4-yl)amino)pyridazin-3-yl)phenyl)-1H-pyrazol-4-yl)methanol (100 mg, MS: 451.4 [M+H+].).

Workup

  1. customThe vial was purged with N2 for 10 min
  2. concentrationThe reaction mixture was concentrated in vacuo
  3. washThe crude material was washed with methanol
  4. washthen eluted with 2 N ammonia in methanol
  5. concentrationThe product-containing fractions were concentrated

Sources & evidence

ORD record
ord-24442f437295413585fc5f01e1e4fd61
Source dataset
uspto-grants-2014_05
Patent number
US08729263B2

Reaction notes

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