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Neopentylamine → {(1S,2S,4R)-4-(2,2-Dimethylpropylcarbamoyl)-1-[2,2-dimethyl-4-(5-fluoro-2-methylphenyl)-5-oxopiperazin-1-ylmethyl]-2-hydroxypentyl}carbamic acid t-butyl ester

HRID 1694981
Notes
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Reaction equation

HRID 1694981 reaction equation
OC1C=CC=CN=1.[C:8]([O:12][C:13](=[O:41])[NH:14][C@H:15]([C@@H:34]1[CH2:38][C@@H:37]([CH3:39])[C:36](=[O:40])[O:35]1)[CH2:16][N:17]1[CH2:22][C:21](=[O:23])[N:20]([C:24]2[CH:29]=[C:28]([F:30])[CH:27]=[CH:26][C:25]=2[CH3:31])[CH2:19][C:18]1([CH3:33])[CH3:32])([CH3:11])([CH3:10])[CH3:9].[CH3:42][C:43]([CH3:47])([CH3:46])[CH2:44][NH2:45]>O>[C:8]([O:12][C:13](=[O:41])[NH:14][C@@H:15]([CH2:16][N:17]1[CH2:22][C:21](=[O:23])[N:20]([C:24]2[CH:29]=[C:28]([F:30])[CH:27]=[CH:26][C:25]=2[CH3:31])[CH2:19][C:18]1([CH3:33])[CH3:32])[C@@H:34]([OH:35])[CH2:38][C@H:37]([C:36](=[O:40])[NH:45][CH2:44][C:43]([CH3:47])([CH3:46])[CH3:42])[CH3:39])([CH3:10])([CH3:11])[CH3:9]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 79882NeopentylamineHCID 66645569{(S)-2-[2,2-Dimethyl-4-(5-fluoro-2-methylphenyl)-5-oxopiperazin-1-yl]-1-[(2S,4R)-4-methyl-5-oxotetrahydrofuran-2-yl]ethyl}carbamic acid t-butyl esterHCID 178516071HCID 178516071, compound

Product 1

HCID 66645682{(1S,2S,4R)-4-(2,2-Dimethylpropylcarbamoyl)-1-[2,2-dimethyl-4-(5-fluoro-2-methylphenyl)-5-oxopiperazin-1-ylmethyl]-2-hydroxypentyl}carbamic acid t-butyl ester
Yield 78%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
80 °C

Procedure

25 mg of 2-hydroxypyridine (0.26 mmol) was added to a solution of 250 mg of {(S)-2-[2,2-dimethyl-4-(5-fluoro-2-methylphenyl)-5-oxopiperazin-1-yl]-1-[(2S,4R)-4-methyl-5-oxotetrahydrofuran-2-yl]ethyl}carbamic acid t-butyl ester obtained in Example (101b) (0.52 mmol) in 1.22 ml of (2,2-dimethylpropyl)amine (10.4 mmol), and the mixture was stirred at 80° C. for two hours. The reaction mixture was cooled and then water was added, followed by extraction with methylene chloride. Then, the organic layer was dried over anhydrous magnesium sulfate. After filtration, the solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (elution solvent: methylene chloride/acetone=2/1) to obtain 228 mg of the title compound (yield: 78%).

Workup

  1. temperatureThe reaction mixture was cooled
  2. extractionfollowed by extraction with methylene chloride
  3. dry with materialThen, the organic layer was dried over anhydrous magnesium sulfate
  4. filtrationAfter filtration
  5. customthe solvent was evaporated under reduced pressure
  6. customthe residue was purified by silica gel column chromatography (elution solvent: methylene chloride/acetone=2/1)

Sources & evidence

ORD record
ord-c040c0727f544f38a4118415d474e2f2
Source dataset
uspto-grants-2012_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08158790B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes