Diisopropylethylamine → Tert-butyl 4-(2-(3-cyano-4-fluoro-2-methylphenyl)-2-oxoethyl)-3-(2-hydroxyethyl)piperazine-1-carboxylate

HRID 1502082Notes

Reaction equation

HRID 1502082 reaction equation
Br[CH2:2][C:3]([C:5]1[C:6]([CH3:14])=[C:7]([C:10]([F:13])=[CH:11][CH:12]=1)[C:8]#[N:9])=[O:4].[OH:15][CH2:16][CH2:17][CH:18]1[NH:23][CH2:22][CH2:21][N:20]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[CH2:19]1.CCN(C(C)C)C(C)C>C1COCC1.[Cl-].[Na+].O>[C:8]([C:7]1[C:6]([CH3:14])=[C:5]([C:3](=[O:4])[CH2:2][N:23]2[CH2:22][CH2:21][N:20]([C:24]([O:26][C:27]([CH3:28])([CH3:29])[CH3:30])=[O:25])[CH2:19][CH:18]2[CH2:17][CH2:16][OH:15])[CH:12]=[CH:11][C:10]=1[F:13])#[N:9]

Participants

6

Reactant 3

HCID 81531DiisopropylethylamineHCID 53407692tert-Butyl 3-(2-hydroxyethyl)piperazine-1-carboxylateHCID 867270493-(2-Bromo-acetyl)-6-fluoro-2-methyl-benzonitrile

Product 1

HCID 89619114Tert-butyl 4-(2-(3-cyano-4-fluoro-2-methylphenyl)-2-oxoethyl)-3-(2-hydroxyethyl)piperazine-1-carboxylate

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 57417360Sodium chloride; waterSolvent

Procedure

3-(2-Bromoacetyl)-6-fluoro-2-methylbenzonitrile (prepared as described above, 5.11 g, 20.0 mmol) was dissolved in THF (100 mL), then known, commercially available compound tert-butyl 3-(2-hydroxyethyl)piperazine-1-carboxylate (4.60 g, 20.0 mmol) was added, followed by Hunig's base (6.96 mL, 39.9 mmol) and the mixture was stirred overnight. The reaction mixed was poured into brine and extracted with ethyl acetate (twice), dried over Na2SO4, filtered and concentrated. The product was purified by MPLC chromatography using a 330 g ISCO Redi Sep column and 5% MeOH/DCM solvent system-to yield tert-butyl 4-(2-(3-cyano-4-fluoro-2-methylphenyl)-2-oxoethyl)-3-(2-hydroxyethyl)piperazine-1-carboxylate: LC-MS (IE, m/z): 406 [M+1]+;

Workup

  1. additionThe reaction mixed
  2. extractionextracted with ethyl acetate (twice),
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe product was purified by MPLC chromatography

Sources & evidence

ORD record
ord-595fc8d3918c4789823db85ea7012c2d
Source dataset
uspto-grants-2015_12
Patent number
US09206199B2

Reaction notes

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