Aniline → (6S)-allyl-(4-oxo-6-phenylcarbamoyl-4,6,7,8-tetrahydro-pyrrolo[1,2-a]pyrimidin-3-yl)-carbamic Acid Benzyl Ester

HRID 10968

Reaction equation

HRID 10968 reaction equation
[CH2:1]([N:4]([C:18]([O:20][CH2:21][C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)=[O:19])[C:5]1[C:10](=[O:11])[N:9]2[C@H:12]([C:15]([OH:17])=O)[CH2:13][CH2:14][C:8]2=[N:7][CH:6]=1)[CH:2]=[CH2:3].[NH2:28][C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1.C1C=NC2N(O)N=NC=2C=1.C([O-])(O)=O.[Na+].CCN=C=NCCCN(C)C>CCOC(C)=O.C(Cl)Cl.CN(C=O)C>[CH2:21]([O:20][C:18](=[O:19])[N:4]([CH2:1][CH:2]=[CH2:3])[C:5]1[C:10](=[O:11])[N:9]2[C@H:12]([C:15](=[O:17])[NH:28][C:29]3[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=3)[CH2:13][CH2:14][C:8]2=[N:7][CH:6]=1)[C:22]1[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=1

Participants

8

Reactant 5

HCID 6115AnilineHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 181649HOAtHCID 516892Sodium BicarbonateHCID 58681925(6S)-3-(allyl-benzyloxycarbonyl-amino)-4-oxo-4,6,7,8-tetrahydro-pyrrolo[1,2-a]pyrimidine-6-carboxylic acid

Product 1

HCID 69600602(6S)-allyl-(4-oxo-6-phenylcarbamoyl-4,6,7,8-tetrahydro-pyrrolo[1,2-a]pyrimidin-3-yl)-carbamic Acid Benzyl Ester

Reagents, catalysts & solvents 2

HCID 8857Ethyl AcetateSolventHCID 22350042dichloromethane N,N-dimethylformamideSolvent

Procedure

To a solution of 18a (5.50 g, 14.89 mmol) and aniline (1.93 mL, 22.3 mmol) in 75 mL 5:1 CH2Cl2/DMF at 0° C., was added HOAT (2.23 g, 16.4 mmol), NaHCO3 (2.50 g, 29.8 mmol), and EDCI (4.00 g, 20.8 mmol). The mixture was stirred and allowed to warm to rt over 72 h. The reaction was diluted with EtOAc and the organic phase was washed with H2O, 1N HCl, H2O, and brine. The organic phase was dried (Na2SO4) and concentrated. The residue obtained was purified by flash chromatography (80 to 90% EtOAc/hexanes) to afford 3.825 g (58%, 2 steps) of 18b as an off-white solid.

Workup

  1. washthe organic phase was washed with H2O, 1N HCl, H2O, and brine
  2. dry with materialThe organic phase was dried (Na2SO4)
  3. concentrationconcentrated
  4. customThe residue obtained
  5. customwas purified by flash chromatography (80 to 90% EtOAc/hexanes)

Sources & evidence

ORD record
ord-3893d05062934c729de80100e116eee3
Source dataset
uspto-grants-2006_08
Patent number
US07094783B2

Linked notes

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