Potassium Carbonate → HCID 51354598, compound

HRID 2077528Notes

Reaction equation

HRID 2077528 reaction equation
Br[C:2]1[CH:3]=[C:4]([NH2:9])[C:5]([CH3:8])=[N:6][CH:7]=1.CC1(C)C(C)(C)OB([C:18]2[CH:30]=[CH:29][C:21]3[N:22]=[C:23]([NH:25][C:26](=[O:28])[CH3:27])[S:24][C:20]=3[CH:19]=2)O1.C(=O)([O-])[O-].[K+].[K+]>COCCOC.O>[NH2:9][C:4]1[CH:3]=[C:2]([C:18]2[CH:30]=[CH:29][C:21]3[N:22]=[C:23]([NH:25][C:26](=[O:28])[CH3:27])[S:24][C:20]=3[CH:19]=2)[CH:7]=[N:6][C:5]=1[CH3:8]

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 219640965-Bromo-2-methylpyridin-3-amineHCID 51354026n-(6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]thiazol-2-yl)acetamide

Product 1

HCID 51354598HCID 51354598, compoundYield 50.1%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
100 °C

Procedure

5-bromo-2-methylpyridin-3-amine (224.9 mg, 1.202 mmol), N-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]thiazol-2-yl)acetamide (413.7 mg, 1.300 mmol), potassium carbonate (549.4 mg, 3.975 mmol), and Pd(dppf)Cl2*DCM complex (108.7 mg, 0.133 mmol) were suspended in DME (5.0 ml) and water (1.25 ml), and the flask was fit with a reflux condensor and argon was bubbled through for about 15 seconds. Then, the flask was placed in a preheated oil bath (100° C.) and stirred under argon for 80 minutes. The reaction was cooled to room temperature, and the aqueous phase was removed via pipette. The reaction was then concentrated, treated with MeOH, and filtered. Solid washed with MeOH, water, MeOH, and Et2O. Solid then collected and dried under high vacuum to afford N-(6-(5-amino-6-methylpyridin-3-yl)benzo[d]thiazol-2-yl)acetamide (179.7 mg, 50% yield). MS (ESI pos. ion) m/z: 299. Calculated exact mass for C15H14N4OS: 298.

Workup

  1. customwas bubbled through for about 15 seconds
  2. customThen, the flask was placed in a preheated oil bath
  3. temperatureThe reaction was cooled to room temperature
  4. customthe aqueous phase was removed via pipette
  5. concentrationThe reaction was then concentrated
  6. additiontreated with MeOH
  7. filtrationfiltered
  8. washSolid washed with MeOH, water, MeOH, and Et2O
  9. customSolid then collected
  10. customdried under high vacuum

Sources & evidence

ORD record
ord-dd4eeb1b724c41539a6e317fa3bd4ac8
Source dataset
uspto-grants-2011_04
Patent number
US07928140B2

Reaction notes

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