Tributylphosphine → 4-((4-Chloro-3-fluorobenzyl)oxy)-1-(2-cyclopropyl-1-methyl-1H-benzimidazol-6-yl)pyridin-2(1H)-one

HRID 2202954Notes

Reaction equation

HRID 2202954 reaction equation
[CH:1]1([C:4]2[N:8]([CH3:9])[C:7]3[CH:10]=[C:11]([N:14]4[CH:19]=[CH:18][C:17]([OH:20])=[CH:16][C:15]4=[O:21])[CH:12]=[CH:13][C:6]=3[N:5]=2)[CH2:3][CH2:2]1.[Cl:22][C:23]1[CH:28]=[CH:27][C:26]([CH2:29]O)=[CH:25][C:24]=1[F:31].C(P(CCCC)CCCC)CCC.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>C1COCC1>[Cl:22][C:23]1[CH:28]=[CH:27][C:26]([CH2:29][O:20][C:17]2[CH:18]=[CH:19][N:14]([C:11]3[CH:12]=[CH:13][C:6]4[N:5]=[C:4]([CH:1]5[CH2:2][CH2:3]5)[N:8]([CH3:9])[C:7]=4[CH:10]=3)[C:15](=[O:21])[CH:16]=2)=[CH:25][C:24]=1[F:31]

Participants

6

Reactant 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 27736114-Chloro-3-fluorobenzyl alcoholHCID 896910841-(2-cyclopropyl-1-methyl-1H-benzimidazol-6-yl)-4-hydroxypyridin-2(1H)-one

Product 1

HCID 896911224-((4-Chloro-3-fluorobenzyl)oxy)-1-(2-cyclopropyl-1-methyl-1H-benzimidazol-6-yl)pyridin-2(1H)-oneYield 16.6%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
60 °C

Procedure

To a solution of 1-(2-cyclopropyl-1-methyl-1H-benzimidazol-6-yl)-4-hydroxypyridin-2(1H)-one (100 mg), (4-chloro-3-fluorophenyl)methanol (114 mg) and tributylphosphine (258 μl) in THF (15 ml) was added 1,1′-(azodicarbonyl)dipiperidine (265 mg). The mixture was stirred under sonication at 60° C. for 2 h. The reaction mixture was then cooled to room temperature, and concentrated in vacuo. The residue was diluted with DCM, washed with water and brine, dried over Na2SO4 and concentrated in vacuo. The residue was purified by silica gel column chromatography (MeOH/DCM) to give the title compound (25 mg) as an off-white solid.

Workup

  1. temperatureThe reaction mixture was then cooled to room temperature
  2. concentrationconcentrated in vacuo
  3. additionThe residue was diluted with DCM
  4. washwashed with water and brine
  5. dry with materialdried over Na2SO4
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by silica gel column chromatography (MeOH/DCM)

Sources & evidence

ORD record
ord-0a158b5015094f71b8e7942022eddbeb
Source dataset
uspto-grants-2016_06
Patent number
US09365540B2

Reaction notes

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