Potassium Phosphate, Tribasic → HCID 86710672, compound

HRID 1027260Notes

Reaction equation

HRID 1027260 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5](B2OC(C)(C)C(C)(C)O2)=[C:4]([O:17][CH3:18])[CH:3]=1.Cl[C:20]1[N:25]=[N:24][C:23]([N:26]([CH3:37])[CH:27]2[CH2:32][C:31]([CH3:34])([CH3:33])[NH:30][C:29]([CH3:36])([CH3:35])[CH2:28]2)=[CH:22][CH:21]=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>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:20]2[N:25]=[N:24][C:23]([N:26]([CH3:37])[CH:27]3[CH2:32][C:31]([CH3:33])([CH3:34])[NH:30][C:29]([CH3:36])([CH3:35])[CH2:28]3)=[CH:22][CH:21]=2)=[C:4]([O:17][CH3:18])[CH:3]=1

Participants

8

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 222400914-Fluoro-2-Methoxybenzeneboronic acid pinacol ester, 96%HCID 867105396-chloro-N-methyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)pyridazin-3-amine2×

Product 1

HCID 86710672HCID 86710672, compoundYield 94%

Reagents, catalysts & solvents 3

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

Conditions

Temperature
100 °C

Procedure

To a microwave vial was added 2-(4-fluoro-2-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (535 mg, 2.12 mmol), 6-chloro-N-methyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)pyridazin-3-amine (Intermediate 1-1, 500 mg, 1.77 mmol), potassium phosphate (1.5 g, 7.07 mmol), Pd2(dba)3 (162 mg, 0.18 mmol), and SPhos (72.6 mg, 0.18 mmol), followed by addition of 1,4-dioxane (3.7 mL)/H2O (0.7 mL). The vial was purged with N2 for 5 minutes 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, loaded on an SCX column and washed with methanol, then eluted with 2 N ammonia in methanol. The product-containing fractions were concentrated to afford 6-(4-fluoro-2-methoxyphenyl)-N-methyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)pyridazin-3-amine (620 mg) MS [M+H+]=373.3.

Workup

  1. customThe vial was purged with N2 for 5 minutes
  2. concentrationThe reaction mixture was concentrated in vacuo
  3. washwashed with methanol
  4. washeluted with 2 N ammonia in methanol
  5. concentrationThe product-containing fractions were concentrated

Sources & evidence

ORD record
ord-31d1f5d0cfcf45f0a977aca355d7d921
Source dataset
uspto-grants-2014_05
Patent number
US08729263B2

Reaction notes

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