Hydrochloric Acid → Ethyl 10-(methylamino)-4-oxo-3-((phenylcarbonyl)oxy)-4,6,7,8,9,10-hexahydro-7,10-ethanopyrimido[1,2-a]azepine-2-carboxylate hydrochloride

HRID 1093082Notes

Reaction equation

HRID 1093082 reaction equation
[ClH:1].[NH2:2][C:3]12[CH2:11][CH2:10][CH:7]([CH2:8][CH2:9]1)[CH2:6][N:5]1[C:12](=[O:30])[C:13]([O:21][C:22]([C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=3)=[O:23])=[C:14]([C:16]([O:18][CH2:19][CH3:20])=[O:17])[N:15]=[C:4]21.Cl.[H][H].[C:34](OCC)(=O)C>C(O)C.[Pd]>[ClH:1].[CH3:34][NH:2][C:3]12[CH2:11][CH2:10][CH:7]([CH2:8][CH2:9]1)[CH2:6][N:5]1[C:12](=[O:30])[C:13]([O:21][C:22]([C:24]3[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=3)=[O:23])=[C:14]([C:16]([O:18][CH2:19][CH3:20])=[O:17])[N:15]=[C:4]21

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 8857Ethyl AcetateHCID 66588778Ethyl 10-amino-4-oxo-3-((phenylcarbonyl)oxy)-4,6,7,8,9,10-hexahydro-7,10-ethanopyrimido[1,2-a]azepine-2-carboxylate hydrochlorideHCID 178418361HCID 178418361, compound

Product 1

HCID 66588781Ethyl 10-(methylamino)-4-oxo-3-((phenylcarbonyl)oxy)-4,6,7,8,9,10-hexahydro-7,10-ethanopyrimido[1,2-a]azepine-2-carboxylate hydrochlorideYield 90%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 702EthanolSolvent

Procedure

To a mixture of ethyl 10-amino-4-oxo-3-((phenylcarbonyl)oxy)-4,6,7,8,9,10-hexahydro-7,10-ethanopyrimido[1,2-a]azepine-2-carboxylate hydrochloride (6 g, 11.96 mmol) in ethyl acetate (100 mL) and ethanol (100 mL) was added 1N HCl (12.56 mL, 12.56 mmol) followed by Pd/C (1.273 g, 1.196 mmol) and the mixture stirred under 1 atm of hydrogen for 2 h. The mixture was then filtered (filter paper) and the solid thoroughly washed with ethyl acetate. The filtrate was concentrated under reduced pressure and dried under high vacuum overnight to afford the title compound (4.8 g, 90% yield)as an off-white solid. 1H NMR (500 MHz, CDCl3) δ: 8.15 (2 H, d, J=7.28 Hz), 7.62-7.67 (1 H, m), 7.47-7.52 (2 H, m), 4.26 (2 H, q, J=7.03 Hz), 4.11 (2 H, d, J=3.76 Hz), 2.76 (3 H, s), 2.56 (1 H, brs), 2.16-2.25 (2 H, m), 2.00-2.13 (4 H, m), 1.68-1.82 (3 H, m), 1.12 (3 H, t, J=7.03 Hz). LCMS (M+H)=412.78.

Workup

  1. filtrationThe mixture was then filtered
  2. filtration(filter paper)
  3. washthe solid thoroughly washed with ethyl acetate
  4. concentrationThe filtrate was concentrated under reduced pressure
  5. customdried under high vacuum overnight

Sources & evidence

ORD record
ord-64133165d2924c39bacdcd8abdbd8460
Source dataset
uspto-grants-2012_03
Patent number
US08129398B2

Reaction notes

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