Ethyl Acetate → Ethyl 1-(6-amino-5-(cyclopropylmethoxy)-4'-(trifluoromethyl)biphenyl-3-yl)cyclopentanecarboxylate

HRID 1183683Notes

Reaction equation

HRID 1183683 reaction equation
[NH2:1][C:2]1[C:7]([O:8][CH2:9][CH:10]2[CH2:12][CH2:11]2)=[CH:6][C:5]([C:13]2([C:18]([O:20][CH2:21][CH3:22])=[O:19])[CH2:17][CH2:16][CH2:15][CH2:14]2)=[CH:4][C:3]=1Br.[F:24][C:25]([F:36])([F:35])[C:26]1[CH:31]=[CH:30][C:29](B(O)O)=[CH:28][CH:27]=1.[F-].[Cs+].CCOC(C)=O>COCCOC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O>[NH2:1][C:2]1[C:3]([C:29]2[CH:30]=[CH:31][C:26]([C:25]([F:36])([F:35])[F:24])=[CH:27][CH:28]=2)=[CH:4][C:5]([C:13]2([C:18]([O:20][CH2:21][CH3:22])=[O:19])[CH2:17][CH2:16][CH2:15][CH2:14]2)=[CH:6][C:7]=1[O:8][CH2:9][CH:10]1[CH2:12][CH2:11]1

Participants

8

Reactant 4

HCID 8857Ethyl AcetateHCID 25953Cesium fluorideHCID 27343894-(Trifluoromethyl)phenylboronic acidHCID 57995561HCID 57995561, compound

Product 1

HCID 57995494Ethyl 1-(6-amino-5-(cyclopropylmethoxy)-4'-(trifluoromethyl)biphenyl-3-yl)cyclopentanecarboxylateYield 73.4%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 80711,2-DimethoxyethaneSolvent

Procedure

A mixture of ethyl 1-(4-amino-3-bromo-5-(cyclopropylmethoxy)phenyl)cyclopentanecarboxylate (5.1 g, 14 mmol), 4-trifluoromethylphenylboronic acid (3.36 g, 17 mmol), CsF (0.28 g, 1.84 mmol) and Pd (PPh3)4 (0.410 g, 0.4 mmol) in 75 mL anhydrous 1,2-dimethoxy ethane was refluxed for 8 h under argon. The reaction mixture was cooled, and 75 mL of EtOAc and 75 mL of water were added. The organic phase was separated, dried over Na2SO4, filtered and concentrated under reduced pressure to yellow oil. The oil was purified by chromatography over silica gel (hexane/EtOAc) to give ethyl 1-(6-amino-5-(cyclopropylmethoxy)-4′-(trifluoromethyl)biphenyl-3-yl)cyclopentanecarboxylate (4.6 g) as a yellow oil.

Workup

  1. temperaturewas refluxed for 8 h under argon
  2. temperatureThe reaction mixture was cooled
  3. customThe organic phase was separated
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure to yellow oil
  7. customThe oil was purified by chromatography over silica gel (hexane/EtOAc)

Sources & evidence

ORD record
ord-042ee1ff1da246de8372eecf45482cfd
Source dataset
uspto-grants-2014_03
Patent number
US08664249B2

Reaction notes

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