Tributylphosphine → HCID 89691170, compound

HRID 2203075Notes

Reaction equation

HRID 2203075 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.[Br:22][C:23]1[S:27][CH:26]=[C:25]([CH2:28]O)[CH:24]=1.C(P(CCCC)CCCC)CCC.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>C1COCC1>[Br:22][C:23]1[S:27][CH:26]=[C:25]([CH2:28][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:24]=1

Participants

6

Reactant 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 19006171(5-Bromothiophen-3-yl)methanolHCID 896910841-(2-cyclopropyl-1-methyl-1H-benzimidazol-6-yl)-4-hydroxypyridin-2(1H)-one

Product 1

HCID 89691170HCID 89691170, compoundYield 30.7%

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 (98 mg), (5-bromo-3-thienyl)methanol (135 mg) and tributylphosphine (211 mg) in THF (3 ml) was added 1,1′-(azodicarbonyl)dipiperidine (264 mg), and the reaction mixture was stirred at 60° C. for 3 h. The reaction mixture was concentrated in vacuo. The residue was purified by silica gel column chromatography (hexane/EtOAc then EtOAc/MeOH). The resulting solid was recrystallized from EtOH-water to give the title compound (48.8 mg) as a white solid.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customThe residue was purified by silica gel column chromatography (hexane/EtOAc
  3. customThe resulting solid was recrystallized from EtOH-water

Sources & evidence

ORD record
ord-947e0da0fde444c09c7dc4184d2a207c
Source dataset
uspto-grants-2016_06
Patent number
US09365540B2

Reaction notes

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