Potassium Carbonate → 1-(4-Chloro-phenyl)-4-{3-[7-(1-hydroxy-1-methyl-ethyl)-11H-10-oxa-1-aza-dibenzo[a,d]cyclohepten-5-ylidene]-propyl}-piperazine-2-carboxylic Acid Methyl Ester

HRID 1983765Notes

Reaction equation

HRID 1983765 reaction equation
[CH3:1][O:2][C:3]([CH:5]1[CH2:10][NH:9][CH2:8][CH2:7][N:6]1[C:11]1[CH:16]=[CH:15][C:14]([Cl:17])=[CH:13][CH:12]=1)=[O:4].C(=O)([O-])[O-].[K+].[K+].Br[CH2:25][CH2:26]/[CH:27]=[C:28]1/[C:29]2[CH:42]=[C:41]([C:43]([OH:46])([CH3:45])[CH3:44])[CH:40]=[CH:39][C:30]=2[O:31][CH2:32][C:33]2[N:38]=[CH:37][CH:36]=[CH:35][C:34]/1=2>C(#N)C.O>[CH3:1][O:2][C:3]([CH:5]1[CH2:10][N:9]([CH2:25][CH2:26][CH:27]=[C:28]2[C:34]3[CH:35]=[CH:36][CH:37]=[N:38][C:33]=3[CH2:32][O:31][C:30]3[CH:39]=[CH:40][C:41]([C:43]([OH:46])([CH3:45])[CH3:44])=[CH:42][C:29]2=3)[CH2:8][CH2:7][N:6]1[C:11]1[CH:16]=[CH:15][C:14]([Cl:17])=[CH:13][CH:12]=1)=[O:4]

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 23136844(E)-2-[5-(3-bromo-propylidene)-5,11-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl]-propan-2-olHCID 667581311-(4-Chloro-phenyl)-piperazine-2-carboxylic acid methyl ester

Product 1

HCID 667578931-(4-Chloro-phenyl)-4-{3-[7-(1-hydroxy-1-methyl-ethyl)-11H-10-oxa-1-aza-dibenzo[a,d]cyclohepten-5-ylidene]-propyl}-piperazine-2-carboxylic Acid Methyl Ester

Reagents, catalysts & solvents 1

HCID 18373917Acetonitrile--water (1/1)Solvent

Conditions

Temperature
50 °C

Procedure

To a solution of 1-(4-chloro-phenyl)-piperazine-2-carboxylic acid methyl ester (0.14 g, 0.53 mmol) in acetonitrile:water (4:1) was added potassium carbonate (0.083 g, 0.6 mmol) and (E)-2-[5-(3-bromo-propylidene)-5,11-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl]-propan-2-ol (150 mg, 0.4 mmol) and the resulting mixture was stirred at 50° C. for 5 hours. The reaction mixture was concentrated in vacuo, diluted with ethyl acetate, and dried over sodium sulfate. The crude product was purified by flash chromatography on silica using gradient elution from ethyl acetate (100%) to ethyl acetate/methanol (5%). 1H-NMR (CDCl3) δ: 1.05 (6H, s), 2.20-2.70 (8H, 2×m), 3.00 (1H, m), 3.10-3.40 (3H, 2×m), 3.55 (3H, s), 4.50 (1H, br, s), 5.30 (2H, br, s), 6.20 (1H, t), 6.70-6.90 (3H, 2×d), 7.10-7.35 (4H, m), 7.50 (2H, d), 8.50 (1H, dd). ESI-MS m/z: 548 (M+1), UV retention time: 1.62 min.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. additiondiluted with ethyl acetate
  3. dry with materialdried over sodium sulfate
  4. customThe crude product was purified by flash chromatography on silica using gradient elution from ethyl acetate (100%) to ethyl acetate/methanol (5%)

Sources & evidence

ORD record
ord-6a31d796ccc0457ca29469ef59135693
Source dataset
uspto-grants-2009_06
Patent number
US07541365B2

Reaction notes

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