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Dimethylacetamide → 5-(2,3-Dihydro-benzo[1,4]dioxin-6-yl)-7-methyl-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine

HRID 1472870
Notes
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Reaction equation

HRID 1472870 reaction equation
Br[C:2]1[N:7]2[N:8]=[C:9]([NH2:11])[N:10]=[C:6]2[CH:5]=[C:4]([CH3:12])[CH:3]=1.[O:13]1[C:18]2[CH:19]=[CH:20][C:21](B(O)O)=[CH:22][C:17]=2[O:16][CH2:15][CH2:14]1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].CC(N(C)C)=O>O>[O:13]1[C:18]2[CH:19]=[CH:20][C:21]([C:2]3[N:7]4[N:8]=[C:9]([NH2:11])[N:10]=[C:6]4[CH:5]=[C:4]([CH3:12])[CH:3]=3)=[CH:22][C:17]=2[O:16][CH2:15][CH2:14]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 31374DimethylacetamideHCID 62657Potassium Phosphate, TribasicHCID 2776178(2,3-Dihydro-1,4-benzodioxin-6-yl)boronic acidHCID 595896855-Bromo-7-methyl-[1,2,4]triazolo[1,5-a]pyridin-2-amine

Product 1

HCID 595895355-(2,3-Dihydro-benzo[1,4]dioxin-6-yl)-7-methyl-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Conditions

Temperature
150 °C

Procedure

5-Bromo-7-methyl-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine (0.19 g, 0.84 mmol), 1,4-benzodioxane-6-boronic acid (0.18 g, 1.00 mmol), palladium(tetrakis)triphenylphosphine (97 mg, 0.084 mmol), potassium phosphate (0.36 g, 1.67 mmol), dimethylacetamide (3 ml) and water (1 ml) were added to a microwave vial containing a stirrer bar. The reaction was heated to 150° C. for 10 min. Water was added to the reaction mixture and the product extracted into ethyl acetate (×2). The organics were combined, washed several times with brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The residue was triturated with diethyl ether and collected by filtration to give the desired product. LCMS RT: 2.82 min, MI: 283.17, Method: 2

Workup

  1. additioncontaining a stirrer bar
  2. extractionthe product extracted into ethyl acetate (×2)
  3. washwashed several times with brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was triturated with diethyl ether
  8. filtrationcollected by filtration

Sources & evidence

ORD record
ord-0a21cf6c0a834977846ae4400e3ce2bb
Source dataset
uspto-grants-2015_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09012633B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes