4-Chloroaniline → HCID 22313565, compound

HRID 496218Notes

Reaction equation

HRID 496218 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH2:10][C:9]1=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].[Cl:14][C:15]1[CH:21]=[CH:20][C:18]([NH2:19])=[CH:17][CH:16]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C([O-])(O)=O.[Na+]>ClC(Cl)C.C(OCC)(=O)C.C(O)(=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH:10]([NH:19][C:18]2[CH:20]=[CH:21][C:15]([Cl:14])=[CH:16][CH:17]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

8

Reactant 4

HCID 78124-ChloroanilineHCID 3790001-Pyrrolidinecarboxylic acid, 2-oxo-, 1,1-dimethylethyl esterHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydride

Product 1

HCID 22313565HCID 22313565, compoundYield 94.3%

Reagents, catalysts & solvents 3

HCID 176Acetic AcidSolventHCID 63651,1-DichloroethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

Tert.butyl-2-oxo-1-pyrrolidinecarboxylate (190 mg, 1.02 mmol), 4-chloroaniline (64 mg, 0.5 mmol) and acetic acid (184 mg) were mixed in dichloroethane (5 mL). Sodium triacetoxyborohydride (326.5 mg) was added and the reaction mixture kept on stirring at room temperature for overnight. After addition of aq. NaHCO3 the reaction mixture was diluted by addition of ethyl acetate. Two layers were separated. The organic layer was dried over Na2SO4, filtered, concentrated. The residue was purified by flash chromatography (0-15% ethyl acetate in petroleum spirit, 40-60) to give the subtitled product (140 mg).

Workup

  1. customTwo layers were separated
  2. dry with materialThe organic layer was dried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe residue was purified by flash chromatography (0-15% ethyl acetate in petroleum spirit, 40-60)

Sources & evidence

ORD record
ord-a3b7a3564b934c74a6246a42258714a5
Source dataset
uspto-grants-2005_09
Patent number
US06943188B2

Reaction notes

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