Water → 2-Amino-6-methyl-5-[3,5-di(trifluoromethyl)phenyl]benzonitrile

HRID 52620

Reaction equation

HRID 52620 reaction equation
[NH2:1][C:2]1[CH:9]=[CH:8][C:7](Br)=[C:6]([CH3:11])[C:3]=1[C:4]#[N:5].[F:12][C:13]([F:28])([F:27])[C:14]1[CH:15]=[C:16](B(O)O)[CH:17]=[C:18]([C:20]([F:23])([F:22])[F:21])[CH:19]=1.C(=O)([O-])[O-].[K+].[K+].O>C1(C)C=CC=CC=1.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>[NH2:1][C:2]1[CH:9]=[CH:8][C:7]([C:16]2[CH:17]=[C:18]([C:20]([F:23])([F:21])[F:22])[CH:19]=[C:14]([C:13]([F:12])([F:28])[F:27])[CH:15]=2)=[C:6]([CH3:11])[C:3]=1[C:4]#[N:5]

Participants

7

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 1562653,5-Bis-trifluoromethylphenylboronic acidHCID 224657376-Amino-3-bromo-2-methylbenzonitrile

Product 1

HCID 154052812-Amino-6-methyl-5-[3,5-di(trifluoromethyl)phenyl]benzonitrileYield 36.3%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 1140TolueneSolvent

Procedure

A stirred solution of 1.7 grams (0.008 mole) of 2-amino-5-bromo-6-methylbenzonitrile, 3.2 grams (0.012 mole) of 3,5-di(trifluoromethyl)phenylboronic acid, 4.3 grams (0.031 mole) of potassium carbonate and 0.3 mL of tetrakis(triphenylphosphine)palladium(0) in 150 mL of toluene was heated at 90° C. for about 20 hours. After this time, the reaction mixture was stirred with 100 mL of water, and the organic layer was separated. The organic layer was concentrated under reduced pressure to a residue. The residue was subjected to column chromatography on silica gel, using 30/65/5 and 20/60/20 methylene chloride/petroleum ether/ethyl acetate as eluants. The product-containing fractions were combined and concentrated under reduced pressure, yielding about 1.0 gram of 2-amino-6-methyl-5-[3,5-di(trifluoromethyl)phenyl]benzonitrile. The NMR spectrum was consistent with the proposed structure.

Workup

  1. customthe organic layer was separated
  2. concentrationThe organic layer was concentrated under reduced pressure to a residue
  3. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-9916fa2187804a368c3277d3be25570e
Source dataset
uspto-grants-1997_04
Patent number
US05616718

Linked notes

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