Methylamine → 1,1-Dimethylethyl 7-({5-[(methylamino)carbonyl]-2-pyrazinyl}oxy)-1,2,4,5-tetrahydro-3H-3-benzazepine-3-carboxylate

HRID 1714918Notes

Reaction equation

HRID 1714918 reaction equation
[C:1](N1C=CN=C1)([N:3]1C=CN=C1)=O.[CH3:13][C:14]([O:17][C:18]([N:20]1[CH2:26][CH2:25][C:24]2[CH:27]=[CH:28][C:29]([O:31][C:32]3[N:33]=[CH:34][C:35]([C:38]([OH:40])=O)=[N:36][CH:37]=3)=[CH:30][C:23]=2[CH2:22][CH2:21]1)=[O:19])([CH3:16])[CH3:15].CN>ClCCl>[CH3:1][NH:3][C:38]([C:35]1[N:36]=[CH:37][C:32]([O:31][C:29]2[CH:28]=[CH:27][C:24]3[CH2:25][CH2:26][N:20]([C:18]([O:17][C:14]([CH3:13])([CH3:16])[CH3:15])=[O:19])[CH2:21][CH2:22][C:23]=3[CH:30]=2)=[N:33][CH:34]=1)=[O:40]

Participants

5

Reactant 3

HCID 6329MethylamineHCID 682631,1'-CarbonyldiimidazoleHCID 574376215-[(3-{[(1,1-Dimethylethyl)oxy]carbonyl}-2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl)oxy]-2-pyrazinecarboxylic acid

Product 1

HCID 685073281,1-Dimethylethyl 7-({5-[(methylamino)carbonyl]-2-pyrazinyl}oxy)-1,2,4,5-tetrahydro-3H-3-benzazepine-3-carboxylateYield 66.8%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

1,1′-Carbonyldiimidazole (16.6 g, 102 mmol) was added to a solution of 5-[(3-{[(1,1-dimethylethyl)oxy]carbonyl}-2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl)oxy]-2-pyrazinecarboxylic acid (D49, Step 2) (37.5 g, 97 mmol) in dry dichloromethane (400 ml) and the resulting mixture was stirred at room temperature for 18 hours. Methylamine (2M solution in tetrahydrofuran) (100 ml) was added and the mixture stirred for 2 hours. The solvent was removed in vacuo and the residue was purified by column chromatography eluting with a mixture of ethyl acetate:chloroform (1:1) to afford the title compound (25.8 g); MS (ES+) m/e 399 [M+H]+.

Workup

  1. stirringthe mixture stirred for 2 hours
  2. customThe solvent was removed in vacuo
  3. customthe residue was purified by column chromatography
  4. washeluting with a mixture of ethyl acetate:chloroform (1:1)

Sources & evidence

ORD record
ord-c97b952dee55428da0a6268e5c2e255b
Source dataset
uspto-grants-2010_09
Patent number
US07799773B2

Reaction notes

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