Hydrochloric Acid → Methyl (+/-)-13-cyclohexyl-6,7-dihydro-6-carboxy-6-methyl-5H-indolo[2,1-a][2]benzazepine-10-carboxylate

HRID 1394900Notes

Reaction equation

HRID 1394900 reaction equation
[OH-].[Li+].[CH:3]1([C:9]2[C:10]3[CH:11]=[CH:12][C:13]([C:32]([O:34][CH3:35])=[O:33])=[CH:14][C:15]=3[N:16]3[CH2:22][C:21]([C:24]([O:26]C)=[O:25])([CH3:23])[CH2:20][C:19]4[CH:28]=[CH:29][CH:30]=[CH:31][C:18]=4[C:17]=23)[CH2:8][CH2:7][CH2:6][CH2:5][CH2:4]1.Cl>CO.O1CCCC1>[CH:3]1([C:9]2[C:10]3[CH:11]=[CH:12][C:13]([C:32]([O:34][CH3:35])=[O:33])=[CH:14][C:15]=3[N:16]3[CH2:22][C:21]([C:24]([OH:26])=[O:25])([CH3:23])[CH2:20][C:19]4[CH:28]=[CH:29][CH:30]=[CH:31][C:18]=4[C:17]=23)[CH2:8][CH2:7][CH2:6][CH2:5][CH2:4]1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 58677045Methyl (+/-)-13-cyclohexyl-6,7-dihydro-6-carbomethoxy-6-methyl-5H-indolo[2,1-a][2]benzazepine-10-carboxylate

Product 1

HCID 58677019Methyl (+/-)-13-cyclohexyl-6,7-dihydro-6-carboxy-6-methyl-5H-indolo[2,1-a][2]benzazepine-10-carboxylateYield 34%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
65 °C

Procedure

Lithium hydroxide (12 mg, 0.5 mmol) was added to a solution of methyl (±)-13-cyclohexyl-6,7-dihydro-6-carbomethoxy-6-methyl-5H-indolo[2,1-a][2]benzazepine-10-carboxylate (20.0 mg, 0.045 mmol) in methanol (1.0 mL) and tetrahydrofuran (1.0 mL) in a microwave vial. The vial was sealed and the contents heated at 65° C. for 50 min in a microwave apparatus. The solution was acidified with dilute hydrochloric acid to precipitate the crude acid. The solid was collected and was purified on the Shimadzu preparative liquid chromatograph. The product containing fraction was concentrated on a Speed Vac® to leave the titled compound as a white solid (6.5 mg, 34%). ESI-MS m/z 432 (MH+) 1H NMR (500 MHz, CHLOROFORM-D) δ ppm 1.18-1.51 (m, 6 H) 1.62-1.83 (m, 3 H) 1.89-2.14 (m, 4 H) 2.36 (d, J=13.73 Hz, 0.5 H) 2.72 (d, J=13.43 Hz, 0.5 H) 2.89-2.98 (m, 1 H) 3.01 (d, J=13.73 Hz, 0.5 H) 3.19 (d, J=14.04 Hz, 0.5 H) 3.32 (d, J=14.65 Hz, 0.5 H) 3.90 (d, J=14.60 Hz, 0.5 H) 3.94 (d, J=17.70 Hz, 3 H) 4.31 (d, J=14.65 Hz, 0.5 H) 4.89 (d, J=14.65 Hz, 0.5 H) 7.30-7.50 (m, 4 H) 7.75 (dd, J=23.04, 8.39 Hz, 1H) 7.86 (dd, J=24.87, 8.39 Hz, 1 H) 8.11 (s, 0.5 H) 8.28 (s, 0.5 H).

Workup

  1. customThe vial was sealed
  2. customto precipitate the crude acid
  3. customThe solid was collected
  4. customwas purified on the Shimadzu preparative liquid chromatograph
  5. additionThe product containing fraction
  6. concentrationwas concentrated on a Speed Vac®

Sources & evidence

ORD record
ord-7225c71e28714cb18f21adcf56c92a66
Source dataset
uspto-grants-2008_03
Patent number
US07348425B2

Reaction notes

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