Triethylamine → 1,1-Dimethylethyl 7-({2-(methyloxy)-4-[(methyloxy)carbonyl]phenyl}oxy)-1,2,4,5-tetrahydro-3H-3-benzazepine-3-carboxylate

HRID 645883Notes

Reaction equation

HRID 645883 reaction equation
[CH3:1][C:2]([O:5][C:6]([N:8]1[CH2:14][CH2:13][C:12]2[CH:15]=[CH:16][C:17](B(O)O)=[CH:18][C:11]=2[CH2:10][CH2:9]1)=[O:7])([CH3:4])[CH3:3].[C:22]([O:33][CH3:34])(=[O:32])[C:23]1[CH:31]=[CH:30][C:28]([OH:29])=[C:25]([O:26][CH3:27])[CH:24]=1.C(N(CC)CC)C>ClCCl.C([O-])(=O)C.[Cu+2].C([O-])(=O)C>[CH3:27][O:26][C:25]1[CH:24]=[C:23]([C:22]([O:33][CH3:34])=[O:32])[CH:31]=[CH:30][C:28]=1[O:29][C:17]1[CH:16]=[CH:15][C:12]2[CH2:13][CH2:14][N:8]([C:6]([O:5][C:2]([CH3:4])([CH3:3])[CH3:1])=[O:7])[CH2:9][CH2:10][C:11]=2[CH:18]=1

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 19844Methyl VanillateHCID 57440296(3-(tert-Butoxycarbonyl)-2,3,4,5-tetrahydro-1H-benzo[d]azepin-7-yl)boronic acid

Product 1

HCID 574402971,1-Dimethylethyl 7-({2-(methyloxy)-4-[(methyloxy)carbonyl]phenyl}oxy)-1,2,4,5-tetrahydro-3H-3-benzazepine-3-carboxylateYield 32.6%

Reagents, catalysts & solvents 2

HCID 8895Cupric acetateCatalystHCID 6344DichloromethaneSolvent2×

Procedure

(3-{[(1,1-Dimethylethyl)oxy]carbonyl}-2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl)boronic acid (E264, Step 2) (500 mg, 1.72 mmol) was dissolved in dry dichloromethane (15 ml) and treated sequentially with methyl vanillate (313 mg, 1.72 mmol), molecular sieves (4A, 1.0 g), copper acetate (467 mg, 2.58 mmol) and triethylamine (1.20 ml, 8.60 mmol) and the resulting mixture was stirred at room temperature for 18 hours. The mixture was diluted with dichloromethane, filtered through celite and evaporated in vacuo. The residue was dissolved in ethyl acetate and washed with saturated sodium bicarbonate solution. The organic portion was dried under magnesium sulfate and evaporated in vacuo. The resulting residue was purified by column chromatography eluting with a mixture of (0.1:9.9) to afford the title compound (240 mg). MS (ES+) m/e 328 [(M+H)—CO2tBu]+.

Workup

  1. filtrationfiltered through celite
  2. customevaporated in vacuo
  3. dissolutionThe residue was dissolved in ethyl acetate
  4. washwashed with saturated sodium bicarbonate solution
  5. customThe organic portion was dried under magnesium sulfate
  6. customevaporated in vacuo
  7. customThe resulting residue was purified by column chromatography
  8. washeluting with a mixture of (0.1:9.9)

Sources & evidence

ORD record
ord-5cec251b79624cb281a6be4fcdf5eda0
Source dataset
uspto-grants-2010_04
Patent number
US07704994B2

Reaction notes

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