Tributylphosphine → Methyl(7-fluoro-4-methyl-6-((1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)methoxy)-1-benzothiophen-3-yl)acetate

HRID 591448Notes

Reaction equation

HRID 591448 reaction equation
C(P(CCCC)CCCC)CCC.[CH3:14][O:15][C:16](=[O:30])[CH2:17][C:18]1[C:22]2[C:23]([CH3:29])=[CH:24][C:25]([OH:28])=[C:26]([F:27])[C:21]=2[S:20][CH:19]=1.[CH3:31][N:32]1[C:36]([CH2:37]O)=[CH:35][C:34]([C:39]([F:42])([F:41])[F:40])=[N:33]1.C1CCN(C(N=NC(N2CCCCC2)=O)=O)CC1>C1COCC1>[CH3:14][O:15][C:16](=[O:30])[CH2:17][C:18]1[C:22]2[C:23]([CH3:29])=[CH:24][C:25]([O:28][CH2:37][C:36]3[N:32]([CH3:31])[N:33]=[C:34]([C:39]([F:42])([F:40])[F:41])[CH:35]=3)=[C:26]([F:27])[C:21]=2[S:20][CH:19]=1

Participants

6

Reactant 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 58456726(1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)methanolHCID 121003808Methyl(7-fluoro-6-hydroxy-4-methyl-1-benzothiophen-3-yl)acetate

Product 1

HCID 118667008Methyl(7-fluoro-4-methyl-6-((1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)methoxy)-1-benzothiophen-3-yl)acetateYield 95.8%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a mixture of tri-n-butylphosphine (0.338 mL), methyl(7-fluoro-6-hydroxy-4-methyl-1-benzothiophen-3-yl)acetate (131.3 mg), (1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)methanol (93 mg) and THF (4.0 mL) was added ADDP (284 mg) at room temperature. The mixture was stirred overnight at room temperature under nitrogen atmosphere. The mixture was concentrated. To the residue was added IPE and the precipitate was filtered off. The filtrate was concentrated in vacuo. The residue was purified by silica gel column chromatography (NH, EtOAc/hexane) to give the title compound (205.9 mg). The compound was crystallized from EtOAc-hexane.

Workup

  1. concentrationThe mixture was concentrated
  2. additionTo the residue was added IPE
  3. filtrationthe precipitate was filtered off
  4. concentrationThe filtrate was concentrated in vacuo
  5. customThe residue was purified by silica gel column chromatography (NH, EtOAc/hexane)

Sources & evidence

ORD record
ord-959dbf1e6eca41108831074758075526
Source dataset
uspto-grants-2016_01
Patent number
US09238639B2

Reaction notes

Loading…