Ethyl Acetate → (rac.) 5-{[7-Chloro-6-fluoro-2,5-dihydroxy-4,4-dimethyl-2-(trifluoromethyl)-1,2,3,4-tetrahydronaphthalen-1-yl]amino}-isoquinolin-1-one

HRID 420639Notes

Reaction equation

HRID 420639 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]([CH3:29])([CH3:28])[CH2:9][C:10]([OH:27])([C:23]([F:26])([F:25])[F:24])[CH:11]=[N:12][C:13]2[CH:22]=[CH:21][CH:20]=[C:19]3[C:14]=2[CH:15]=[CH:16][N:17]=[CH:18]3)=[C:4]([O:30]C)[C:3]=1[F:32].B(Br)(Br)Br.C(=O)(O)[O-:38].[Na+].C(OCC)(=O)C>ClCCl>[Cl:1][C:2]1[CH:7]=[C:6]2[C:5]([C:8]([CH3:28])([CH3:29])[CH2:9][C:10]([OH:27])([C:23]([F:24])([F:25])[F:26])[CH:11]2[NH:12][C:13]2[CH:22]=[CH:21][CH:20]=[C:19]3[C:14]=2[CH:15]=[CH:16][NH:17][C:18]3=[O:38])=[C:4]([OH:30])[C:3]=1[F:32]

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 25134Boron tribromideHCID 516892Sodium BicarbonateHCID 86600873(Rac.) 5-{[4-(4-chloro-3-fluoro-2-methoxyphenyl)-2-hydroxy-4-methyl-2-(trifluoromethyl)pentylidene]amino}isoquinolin

Product 1

HCID 86600872(rac.) 5-{[7-Chloro-6-fluoro-2,5-dihydroxy-4,4-dimethyl-2-(trifluoromethyl)-1,2,3,4-tetrahydronaphthalen-1-yl]amino}-isoquinolin-1-oneYield 31.6%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

80.3 mg (0.166 mmol) of (rac.) 5-{[4-(4-chloro-3-fluoro-2-methoxyphenyl)-2-hydroxy-4-methyl-2-(trifluoromethyl)pentylidene]amino}isoquinolin-[1(2H)-one is mixed at room temperature with 1.7 ml of a 1 molar solution of boron tribromide in dichloromethane, and it is stirred for two and one-half hours at room temperature. The reaction mixture is mixed with ice, and then saturated sodium bicarbonate solution is added in drops (pH 8). After the ethyl acetate is added and after ten minutes of vigorous stirring at room temperature, the aqueous phase is extracted twice with ethyl acetate. The combined organic phases are washed with water and with brine, dried, and the residue is chromatographed on a Flashmaster after the solvent is spun off. 24.6 mg (31.6%) of the desired compound is isolated.

Workup

  1. additionThe reaction mixture is mixed with ice
  2. stirringof vigorous stirring at room temperature
  3. extractionthe aqueous phase is extracted twice with ethyl acetate
  4. washThe combined organic phases are washed with water and with brine
  5. customdried
  6. customthe residue is chromatographed on a Flashmaster after the solvent

Sources & evidence

ORD record
ord-28a1c81b1fed42fbafaaad3971d1892d
Source dataset
uspto-grants-2012_01
Patent number
US08097627B2

Reaction notes

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