Aminoisobutyric acid → HCID 56966715, compound

HRID 1036876Notes

Reaction equation

HRID 1036876 reaction equation
Br[C:2]1[CH:3]=[C:4]([CH:8]2[CH2:17][C:16]([CH3:19])([CH3:18])[C:15]3[C:10](=[CH:11][CH:12]=[C:13]([C:20]([F:23])([F:22])[F:21])[CH:14]=3)[N:9]2[CH3:24])[CH:5]=[CH:6][CH:7]=1.[NH2:25][C:26]([CH3:31])([CH3:30])[C:27]([OH:29])=[O:28].C(=O)([O-])[O-].[K+].[K+]>CS(C)=O.[Cu]I>[CH3:30][C:26]([NH:25][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([CH:8]2[CH2:17][C:16]([CH3:19])([CH3:18])[C:15]3[C:10](=[CH:11][CH:12]=[C:13]([C:20]([F:23])([F:22])[F:21])[CH:14]=3)[N:9]2[CH3:24])[CH:3]=1)([CH3:31])[C:27]([OH:29])=[O:28]

Participants

6

Reactant 3

HCID 6119Aminoisobutyric acidHCID 11430Potassium CarbonateHCID 67291515HCID 67291515, compound

Product 1

HCID 56966715HCID 56966715, compoundYield 30.1%

Reagents, catalysts & solvents 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 679Dimethyl SulfoxideSolvent

Procedure

A solution of 2-(3-bromo-phenyl)-1,4,4-trimethyl-6-trifluoromethyl-1,2,3,4-tetrahydro-quinoline (398.0 mg, 1.0 mmol), copper(I) iodide (57.0 mg, 0.3 mmol), 2-amino-2-methyl-propionic acid (309.0 mg, 3.0 mmol) and potassium carbonate (415.0 mg, 3.0 mmol) in dimethyl sulfoxide (2.0 mL) was stirred at 120° C. for 16 h. Then the reaction mixture was cooled to room temperature and extracted with ethyl acetate (150 mL×2), washed with water (50 mL×2) and saturated aqueous ammonium chloride solution (50 mL×2), dried over anhydrous sodium sulfate and then concentrated in vacuo. Purification by Waters automated flash system (column: Xterra 30 mm×100 mm, sample manager 2767, pump 2525, detector: ZQ mass and UV 2487, solvent system: acetonitrile and 0.1% ammonium hydroxide in water) afforded 2-methyl-2-[3-(1,4,4-trimethyl-6-trifluoromethyl-1,2,3,4-tetrahydro-quinolin-2-yl)-phenylamino]-propionicacid (126.4 mg, 30.1%) as a white solid: LC/MS m/e obsd. (ESI+) [(M+H)+] 421.3.

Workup

  1. extractionextracted with ethyl acetate (150 mL×2)
  2. washwashed with water (50 mL×2) and saturated aqueous ammonium chloride solution (50 mL×2)
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customPurification by Waters automated flash system (column: Xterra 30 mm×100 mm, sample manager 2767, pump 2525, detector: ZQ mass and UV 2487, solvent system: acetonitrile and 0.1% ammonium hydroxide in water)

Sources & evidence

ORD record
ord-ea78064a3f504e999154ed9877577066
Source dataset
uspto-grants-2013_10
Patent number
US08546427B2

Reaction notes

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