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1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 1-(4-{(2S)-3-[(6-Chloronaphthalen-2-yl)sulfonyl]-2-hydroxypropanoyl}piperazin-1-yl)tetrahydropyrimidin-2(1H)-one

HRID 20230
Notes
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Reaction equation

HRID 20230 reaction equation
[N:1]1([N:7]2[CH2:12][CH2:11][CH2:10][NH:9][C:8]2=[O:13])[CH2:6][CH2:5][NH:4][CH2:3][CH2:2]1.[Cl:14][C:15]1[CH:16]=[C:17]2[C:22](=[CH:23][CH:24]=1)[CH:21]=[C:20]([S:25]([CH2:28][C@@H:29]([OH:33])[C:30](O)=[O:31])(=[O:27])=[O:26])[CH:19]=[CH:18]2.C1C=CC2N(O)N=NC=2C=1.CCN=C=NCCCN(C)C>CN(C=O)C>[Cl:14][C:15]1[CH:16]=[C:17]2[C:22](=[CH:23][CH:24]=1)[CH:21]=[C:20]([S:25]([CH2:28][C@@H:29]([OH:33])[C:30]([N:4]1[CH2:3][CH2:2][N:1]([N:7]3[CH2:12][CH2:11][CH2:10][NH:9][C:8]3=[O:13])[CH2:6][CH2:5]1)=[O:31])(=[O:26])=[O:27])[CH:19]=[CH:18]2
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 66854329(2S)-3-[(6-chloro-2-naphthyl)sulfonyl]-2-hydroxypropionic acidHCID 672326581-(Piperazin-1-yl)tetrahydropyrimidin-2(1H)-one

Product 1

HCID 115113461-(4-{(2S)-3-[(6-Chloronaphthalen-2-yl)sulfonyl]-2-hydroxypropanoyl}piperazin-1-yl)tetrahydropyrimidin-2(1H)-one
Yield 61%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

1-(Piperazin-1-yl)tetrahydropyrimidin-2(1H)-one obtained in Example 25b) (0.55 g), (2S)-3-[(6-chloronaphthalen-2-yl)sulfony]-2-hydroxypropionic acid (0.94 g) and HOBt (0.46 g) were dissolved in DMF (20 mL), WSC was added thereto, and the mixture was stirred at room temperature for 15 hours. The reaction mixture was concentrated under reduced pressure, and the residue was washed with an aqueous sodium bicarbonate solution, and extracted with dichloromethane. The extract was dried over sodium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by basic silica gel column chromatography (ethyl acetate to ethyl acetate/methanol=5/1), and recrystallized from ethyl acetate-methanol to obtain the title compound (0.88 g, 61%) as a colorless powder.

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. washthe residue was washed with an aqueous sodium bicarbonate solution
  3. extractionextracted with dichloromethane
  4. dry with materialThe extract was dried over sodium sulfate
  5. distillationthe solvent was distilled off under reduced pressure
  6. customThe residue was purified by basic silica gel column chromatography (ethyl acetate to ethyl acetate/methanol=5/1)
  7. customrecrystallized from ethyl acetate-methanol

Sources & evidence

ORD record
ord-2718ad0fa22e474dbf52206f36e0ea54
Source dataset
uspto-grants-2010_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07745623B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes