Pyridine → HCID 67008413, compound

HRID 2048213Notes

Reaction equation

HRID 2048213 reaction equation
[O:1]=[C:2]1[C:7]([CH2:8][C:9]2[CH:14]=[CH:13][C:12]([C:15]3[C:16]([C:21]#[N:22])=[CH:17][CH:18]=[CH:19][CH:20]=3)=[CH:11][CH:10]=2)=[C:6]([CH2:23][CH2:24][CH3:25])[N:5]2[N:26]=[CH:27][N:28]=[C:4]2[NH:3]1.[C:29]([C:32]1[CH:37]=[CH:36][C:35](B(O)O)=[CH:34][CH:33]=1)(=[O:31])[CH3:30].[CH2:41](N(CC)CC)C.N1C=CC=CC=1>ClCCl.C(OCC)(=O)C.C([O-])(=O)C.[Cu+2].C([O-])(=O)C>[OH:31][C:29]([C:32]1[CH:37]=[CH:36][C:35]([N:3]2[C:2](=[O:1])[C:7]([CH2:8][C:9]3[CH:10]=[CH:11][C:12]([C:15]4[C:16]([C:21]#[N:22])=[CH:17][CH:18]=[CH:19][CH:20]=4)=[CH:13][CH:14]=3)=[C:6]([CH2:23][CH2:24][CH3:25])[N:5]3[N:26]=[CH:27][N:28]=[C:4]23)=[CH:34][CH:33]=1)([CH3:41])[CH3:30]

Participants

8

Reactant 4

HCID 1049PyridineHCID 8471TriethylamineHCID 37021224-Acetylphenylboronic acidHCID 1357150294'-[(5-Oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)methyl]biphenyl-2-carbonitrile

Product 1

HCID 67008413HCID 67008413, compoundYield 41%

Reagents, catalysts & solvents 3

HCID 8895Cupric acetateCatalystHCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a suspension (26 mL) of 4′-[(5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)methyl]biphenyl-2-carbonitrile (0.86 g), (4-acetylphenyl)boronic acid (0.83 g), triethylamine (0.86 mL), pyridine (1.7 mL) and molecular sieves 4A (1.7 g) in dichloromethane was added copper(II) acetate (0.84 g), and the mixture was stirred for 16 hr. The reaction mixture was diluted with ethyl acetate, insoluble material was filtered off through celite, and the filtrate was concentrated. Methyllithium (2.2M diethyl ether solution, 0.94 mL) was added to the obtained residue at −78° C. The reaction mixture was stirred at the same temperature for 1 hr, and extracted with saturated aqueous ammonium chloride solution and diethyl ether. The diethyl ether layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography to give the title compound as a colorless solid (0.47 g, 41%).

Workup

  1. filtrationwas filtered off through celite
  2. concentrationthe filtrate was concentrated
  3. additionMethyllithium (2.2M diethyl ether solution, 0.94 mL) was added to the obtained residue at −78° C
  4. stirringThe reaction mixture was stirred at the same temperature for 1 hr
  5. extractionextracted with saturated aqueous ammonium chloride solution and diethyl ether
  6. washThe diethyl ether layer was washed with saturated brine
  7. dry with materialdried over anhydrous magnesium sulfate
  8. customThe solvent was evaporated under reduced pressure
  9. customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-77ce11761f224b39986a07b5a1d58ed1
Source dataset
uspto-grants-2013_11
Patent number
US08592431B2

Reaction notes

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