Water → HCID 135674088, compound

HRID 990782Notes

Reaction equation

HRID 990782 reaction equation
[NH2:1][C:2]1[CH:7]=[N:6][C:5](Br)=[CH:4][N:3]=1.[OH:9][C:10]1[CH:15]=[CH:14][C:13](B(O)O)=[CH:12][CH:11]=1.C(=O)([O-])[O-].[Na+].[Na+].O>C(COC)OC.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[NH2:1][C:2]1[CH:7]=[N:6][C:5]([C:13]2[CH:14]=[CH:15][C:10]([OH:9])=[CH:11][CH:12]=2)=[CH:4][N:3]=1

Participants

7

Reactant 4

HCID 962WaterHCID 10340Sodium CarbonateHCID 5995392-Amino-5-bromopyrazineHCID 27343604-Hydroxyphenylboronic acid

Product 1

HCID 135674088HCID 135674088, compound

Reagents, catalysts & solvents 2

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 2-amino-5-bromopyrazine (366 mg) in dimethoxyethane (20 mL) was added 4-hydroxyphenylboronic acid (320 mL), 1.5N sodium carbonate aqueous solution (2.5 mL) and tetrakis (triphenylphosphine) palladium (0) (54 mg). The mixture was stirred at 80° C. for 3 hours. To the reaction mixture was added water (20 mL) and the whole was extracted with ethyl acetate (50 mL×3). The extract was washed with saturated saline solution, then dried over anhydrous Na2SO4. The removal of the solvent provided crystal residue, which was washed with diethyl ether (10 mL) to give the subject compound (305 mg).

Workup

  1. extractionthe whole was extracted with ethyl acetate (50 mL×3)
  2. washThe extract was washed with saturated saline solution
  3. dry with materialdried over anhydrous Na2SO4
  4. customThe removal of the solvent
  5. customprovided crystal residue, which
  6. washwas washed with diethyl ether (10 mL)

Sources & evidence

ORD record
ord-8726927fc4644b6eb915fa3971293577
Source dataset
uspto-grants-2002_10
Patent number
US06462053B1

Reaction notes

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