Citric Acid → HCID 67486861, compound

HRID 1994826Notes

Reaction equation

HRID 1994826 reaction equation
[CH2:1]([S:8][CH:9]([CH:42]=O)[CH2:10][NH:11][C:12]([C:14]1[NH:15][C:16]2[C:21]([CH:22]=1)=[CH:20][C:19]([O:23][CH2:24][CH2:25][CH2:26][S:27]([CH3:30])(=[O:29])=[O:28])=[CH:18][C:17]=2[N:31]([CH3:41])[S:32]([C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][N:36]=1)(=[O:34])=[O:33])=[O:13])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:44]([N:47]1[CH2:52][CH2:51][NH:50][CH2:49][CH2:48]1)(=[O:46])[CH3:45].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(O)(=O)CC(CC(O)=O)(C(O)=O)O.C(=O)([O-])O.[Na+]>ClCCCl>[C:44]([N:47]1[CH2:52][CH2:51][N:50]([CH2:42][CH:9]([S:8][CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)[CH2:10][NH:11][C:12]([C:14]2[NH:15][C:16]3[C:21]([CH:22]=2)=[CH:20][C:19]([O:23][CH2:24][CH2:25][CH2:26][S:27]([CH3:30])(=[O:29])=[O:28])=[CH:18][C:17]=3[N:31]([CH3:41])[S:32]([C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][N:36]=2)(=[O:33])=[O:34])=[O:13])[CH2:49][CH2:48]1)(=[O:46])[CH3:45]

Participants

7

Reactant 5

HCID 311Citric AcidHCID 837951-AcetylpiperazineHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 86619906HCID 86619906, compound

Product 1

HCID 67486861HCID 67486861, compoundYield 85.2%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

A mixture of N-[2-(benzylthio)-3-oxopropyl]-7-[methyl(pyridin-2-ylsulfonyl)amino]-5-[3-(methylsulfonyl)propoxy]-1H-indole-2-carboxamide (0.35 g), N-acetylpiperazine (0.14 g) and 1,2-dichloroethane (8 mL) was stirred at room temperature for 10 min. Sodium triacetoxyborohydride (345 mg) was added to the reaction solution, and the mixture was stirred at room temperature for 16 hr. The reaction solution was acidified with aqueous citric acid solution, basified with aqueous sodium hydrogencarbonate solution, and extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was subjected to silica gel column chromatography (ethyl acetate:methanol=10:0-9:1) to give the title compound (0.35 g, yield: 85%) as a colorless amorphous solid. MS: 756 (MH+).

Workup

  1. stirringthe mixture was stirred at room temperature for 16 hr
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-fb796a1c8d684c37a8d71b67df500bd2
Source dataset
uspto-grants-2010_01
Patent number
US07652133B2

Reaction notes

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