Dichloromethane → 7-(4-chlorophenyl)-8-(4-(methoxymethyl)phenyl)-2-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)methyl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one

HRID 2101311

Reaction equation

HRID 2101311 reaction equation
Br[C:2]1[C:3]2[N:4]([C:15](=[O:30])[N:16]([CH2:18][C:19]3[C:20]([CH3:29])=[N:21][C:22]([C:25]([F:28])([F:27])[F:26])=[CH:23][CH:24]=3)[N:17]=2)[CH:5]=[CH:6][C:7]=1[C:8]1[CH:13]=[CH:12][C:11]([Cl:14])=[CH:10][CH:9]=1.[CH3:31][O:32][CH2:33][C:34]1[CH:39]=[CH:38][C:37](B(O)O)=[CH:36][CH:35]=1.C(Cl)Cl.[O-]P([O-])([O-])=O.[K+].[K+].[K+]>C1COCC1.CCOC(C)=O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[Cl:14][C:11]1[CH:12]=[CH:13][C:8]([C:7]2[CH:6]=[CH:5][N:4]3[C:15](=[O:30])[N:16]([CH2:18][C:19]4[C:20]([CH3:29])=[N:21][C:22]([C:25]([F:27])([F:26])[F:28])=[CH:23][CH:24]=4)[N:17]=[C:3]3[C:2]=2[C:37]2[CH:38]=[CH:39][C:34]([CH2:33][O:32][CH3:31])=[CH:35][CH:36]=2)=[CH:9][CH:10]=1

Participants

8

Reactant 4

HCID 6344DichloromethaneHCID 62657Potassium Phosphate, TribasicHCID 37238124-(Methoxymethyl)benzeneboronic acidHCID 577994058-bromo-7-(4-chlorophenyl)-2-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)methyl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one

Product 1

HCID 160052007-(4-chlorophenyl)-8-(4-(methoxymethyl)phenyl)-2-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)methyl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one

Reagents, catalysts & solvents 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
90 °C

Procedure

To a stirring solution of 8-bromo-7-(4-chlorophenyl)-2-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)methyl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one (60 mg, 0.12 mmol) in THF (2 mL) at room temperature under argon was added 4-methoxymethylphenylboronic acid (60.0 mg, 0.36 mmol), Pd(dppf)Cl2.CH2Cl2 (11.0 mg, 0.012 mmol), and K3PO4 (77 mg, 0.36 mmol). The resulting suspension was purged of oxygen by bubbling with argon for 15 min, sealed in a vial under argon, heated at 90° C. for 12 h, and then cooled to room temperature. Analysis by HPLC/MS indicated that starting material was absent and one major new product had formed. The reaction mixture was diluted with EtOAc and washed once with brine. The organic layer was dried (MgSO4), filtered, and concentrated under reduced pressure. The crude product was purified by automated silica gel chromatography (eluted with EtOAc/hexanes). Pooling of the desired fractions, washing with saturated aq. NaHCO3 solution to eliminate any possible boronic acid contaminant, drying the organic phase (MgSO4), filtering and evaporation provided the title compound as a yellow solid, 38 mg, 59%. HPLC/MS: retention time=3.94 min, [M+H]+=539. 1H NMR (CDCl3): δ 7.82 (d, J=7.7 Hz, 1H), 7.67 (d, J=8.2 Hz, 1H), 7.48 (d, J=7.7 Hz, 1H), 7.25 (m, 5H), 7.05 (d, J=7.7 Hz, 2H), 6.64 (d, J=7.2 Hz, 1H), 5.23 (s, 2H), 4.44 (s, 2H), 3.41 (s, 3H), 2.74 (s, 3H).

Workup

  1. customThe resulting suspension was purged of oxygen
  2. customby bubbling with argon for 15 min
  3. customsealed in a vial under argon
  4. temperaturecooled to room temperature
  5. customone major new product had formed
  6. washwashed once with brine
  7. dry with materialThe organic layer was dried (MgSO4)
  8. filtrationfiltered
  9. concentrationconcentrated under reduced pressure
  10. customThe crude product was purified by automated silica gel chromatography (eluted with EtOAc/hexanes)
  11. washPooling of the desired fractions, washing with saturated aq. NaHCO3 solution
  12. dry with materialdrying the organic phase (MgSO4)
  13. filtrationfiltering
  14. customevaporation

Sources & evidence

ORD record
ord-ef05cc88d1fd432c8f05ab6fac1a3f54
Source dataset
uspto-grants-2009_08
Patent number
US07572808B2

Linked notes

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