1,2-Dichloroethane → HCID 21031077, compound

HRID 1830170Notes

Reaction equation

HRID 1830170 reaction equation
[N:1]1([C:7](=[O:24])[CH2:8][CH:9]([CH2:13][S:14]([CH2:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)(=[O:16])=[O:15])[C:10]([OH:12])=O)[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1.[C:25]([O:29][C:30]([N:32]1[CH2:36][CH:35]([OH:37])[CH:34]([NH2:38])[CH2:33]1)=[O:31])([CH3:28])([CH3:27])[CH3:26].C(Cl)CCl.C1C=CC2N(O)N=NC=2C=1.CN1CCOCC1>>[C:25]([O:29][C:30]([N:32]1[CH2:36][C:35](=[O:37])[CH:34]([NH:38][C:10](=[O:12])[CH:9]([CH2:13][S:14]([CH2:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)(=[O:16])=[O:15])[CH2:8][C:7]([N:1]2[CH2:2][CH2:3][O:4][CH2:5][CH2:6]2)=[O:24])[CH2:33]1)=[O:31])([CH3:28])([CH3:26])[CH3:27]

Participants

6

Reactant 5

HCID 111,2-DichloroethaneHCID 79724-MethylmorpholineHCID 757711-HydroxybenzotriazoleHCID 11229445tert-Butyl 3-amino-4-hydroxypyrrolidine-1-carboxylateHCID 220539874-Morpholin-4-yl-4-oxo-2-benzylsulfonylmethyl-butyric acid

Product 1

HCID 21031077HCID 21031077, compound

Procedure

4-Morpholin-4-yl-4-oxo-2-benzylsulfonylmethyl-butyric acid (120 mg, 0.34 mmol), 3-amino-4-hydroxy-pyrrolidine-1-carboxylic acid tert-butyl ester (150 mg, 0.74 mmol), prepared as in reference 13, EDC (0.3 g, 1.6 mmol), and HOBt (150 mg, 0.96 mmol) were combined. Dichloromethyl (10 mL) was added and then 4-methylmorpholine (0.5 mL). The mixture was stirred at ambient temperature for 2 hours. After dilution with ethyl acetate (200 mL) the solution was washed with 1N aqueous HCl (50 mL), saturated aqueous NaHCO3 (50 mL) and brine (50 mL), dried with MgSO4 and evaporated under vacuum. The pyrrolidine-1-carboxylic acid tert-butyl ester was dissolved in DMSO (5 mL). Triethylamine (0.5 mL) and then SO3 pyridine complex (150 mg) were added and the mixture was stiffed at ambient temperature for 3 hours. After dilution with ethyl acetate (100 mL), the solution was washed with water (50 mL) and brine, dried with MgSO4 and evaporated under vacuum. The residue was purified by flash chromatography on silica gel. Eluent: 5% methanol in ethyl acetate. Yield: 40 mg 3-(4-morpholin-4-yl-4-oxo-2-benzylsulfonylmethyl-butyrylamino)-4-oxo-1-pyrrolidine-1-carboxylic acid tert-butyl ester as white solid as mixture of diastereomers; 1H NMR: (DMSO) 8.80–8.66 (m, 1H), 7.42–7.34 (m, 5H), 4.52–4.41 (m, 2H), 4.34–4.20 (m, 1H), 3.98–3.88 (m, 1H), 3.82 (d, J=18.5 Hz, 1H), 3.70–3.05 (m, 13H), 2.70–2.52 (m, 2H), 1.41 (s, 9H); MS: (M+H)+ 538.

Workup

  1. additionDichloromethyl (10 mL) was added
  2. washAfter dilution with ethyl acetate (200 mL) the solution was washed with 1N aqueous HCl (50 mL), saturated aqueous NaHCO3 (50 mL) and brine (50 mL)
  3. dry with materialdried with MgSO4
  4. customevaporated under vacuum
  5. dissolutionThe pyrrolidine-1-carboxylic acid tert-butyl ester was dissolved in DMSO (5 mL)
  6. additionTriethylamine (0.5 mL) and then SO3 pyridine complex (150 mg) were added
  7. waitthe mixture was stiffed at ambient temperature for 3 hours
  8. washAfter dilution with ethyl acetate (100 mL), the solution was washed with water (50 mL) and brine
  9. dry with materialdried with MgSO4
  10. customevaporated under vacuum
  11. customThe residue was purified by flash chromatography on silica gel
  12. additionYield: 40 mg 3-(4-morpholin-4-yl-4-oxo-2-benzylsulfonylmethyl-butyrylamino)-4-oxo-1-pyrrolidine-1-carboxylic acid tert-butyl ester as white solid as mixture of diastereomers

Sources & evidence

ORD record
ord-930ef210a77c42f7a982165d692babae
Source dataset
uspto-grants-2006_06
Patent number
US07064123B1

Reaction notes

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