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

HRID 591459Notes

Reaction equation

HRID 591459 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]([Cl: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]([Cl: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 121006517Methyl 2-(4-chloro-7-fluoro-6-hydroxy-1-benzothiophen-3-yl)acetate

Product 1

HCID 118667009Methyl(4-chloro-7-fluoro-6-((1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)methoxy)-1-benzothiophen-3-yl)acetateYield 88.9%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a mixture of tri-n-butylphosphine (0.249 mL), methyl(4-chloro-7-fluoro-6-hydroxy-1-benzothiophen-3-yl)acetate (109.7 mg), (1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)methanol (86 mg) and THF (4.0 mL) was added ADDP (202 mg) at room temperature. The mixture was stirred at room temperature under nitrogen atmosphere for 1 h. 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 (EtOAc/hexane) to give the title compound (155 mg).

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 (EtOAc/hexane)

Sources & evidence

ORD record
ord-4e22e142568a4ba994aa2c4d087eb593
Source dataset
uspto-grants-2016_01
Patent number
US09238639B2

Reaction notes

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