2,6-Di-tert-butyl-4-methylphenol → (1S,2S)-2-(4-{(R)-4-[4-(tert-Butyl-dimethyl-silanyloxy)-phenyl]-5-trifluoromethyl-indan-1-yloxy}-phenyl)-cyclopropanecarboxylic acid ethyl ester

HRID 471461Notes

Reaction equation

HRID 471461 reaction equation
[CH2:1]([O:3][C:4]([C@H:6]1[CH2:8][C@@H:7]1[C:9]1[CH:14]=[CH:13][C:12]([O:15][C@H:16]2[C:24]3[C:19](=[C:20](Br)[C:21]([C:25]([F:28])([F:27])[F:26])=[CH:22][CH:23]=3)[CH2:18][CH2:17]2)=[CH:11][CH:10]=1)=[O:5])[CH3:2].[C:30]([Si:34]([CH3:46])([CH3:45])[O:35][C:36]1[CH:41]=[CH:40][C:39](B(O)O)=[CH:38][CH:37]=1)([CH3:33])([CH3:32])[CH3:31].C(C1C=C(C)C=C(C(C)(C)C)C=1O)(C)(C)C.C1(P(C2CCCCC2)C2CCCCC2)CCCCC1>O1CCOCC1.O.[Cl-].[NH4+].C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH2:1]([O:3][C:4]([C@H:6]1[CH2:8][C@@H:7]1[C:9]1[CH:14]=[CH:13][C:12]([O:15][C@H:16]2[C:24]3[C:19](=[C:20]([C:39]4[CH:40]=[CH:41][C:36]([O:35][Si:34]([C:30]([CH3:33])([CH3:32])[CH3:31])([CH3:45])[CH3:46])=[CH:37][CH:38]=4)[C:21]([C:25]([F:28])([F:27])[F:26])=[CH:22][CH:23]=3)[CH2:18][CH2:17]2)=[CH:11][CH:10]=1)=[O:5])[CH3:2]

Participants

9

Reactant 4

HCID 314042,6-Di-tert-butyl-4-methylphenolHCID 75806TricyclohexylphosphineHCID 111078154-(tert-Butyldimethylsilyloxy)phenylboronic Acid (contains varying amounts of Anhydride)HCID 86703893(1S,2S)-2-[4-((R)-4-Bromo-5-trifluoromethyl-indan-1-yloxy)-phenyl]-cyclopropanecarboxylic acid ethyl ester

Product 1

HCID 86703892(1S,2S)-2-(4-{(R)-4-[4-(tert-Butyl-dimethyl-silanyloxy)-phenyl]-5-trifluoromethyl-indan-1-yloxy}-phenyl)-cyclopropanecarboxylic acid ethyl esterYield 35.1%

Reagents, catalysts & solvents 4

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 962WaterSolventHCID 25517Ammonium ChlorideSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
110 °C

Procedure

(1S,2S)-2-[4-((R)-4-Bromo-5-trifluoromethyl-indan-1-yloxy)-phenyl]-cyclopropanecarboxylic acid ethyl ester (200 mg, 0.43 mmol), 4-(tertbutyldimethylsilyloxy)phenylboronic acid (118 mg, 0.47 mmol) potassium carbonate (176 mg, 1.28 mmol), 2,6-di-tert-butyl-4-methylphenol (47 mg, 0.21 mmol), tricyclohexylphosphine (10 mg, 0.03 mmol), and Pd2(dba)3 (16 mg, 0.02 mmol) are suspended in a mixture of dioxane (1.7 mL) and water (0.6 mL) in a sealed tube and heated at 110° C. for 4 hours. The mixture is diluted with saturated ammonium chloride solution and extracted with ethyl acetate. The organic phase is dried and concentrated under vacuum. The residue is purified by flash chromatography (eluent: 0-30% EtOAc in cyclohexane) to give the title compound (Yield 90 mg)

Workup

  1. extractionextracted with ethyl acetate
  2. customThe organic phase is dried
  3. concentrationconcentrated under vacuum
  4. customThe residue is purified by flash chromatography (eluent: 0-30% EtOAc in cyclohexane)

Sources & evidence

ORD record
ord-5729f19259d845fea7812d12de707552
Source dataset
uspto-grants-2014_01
Patent number
US08633182B2

Reaction notes

Loading…