Hydrochloric Acid → 13-Cyclohexyl-6,7-dihydro-6-oxo-5H-indolo[2,1-a][2]benzazepine-10-carboxylic acid

HRID 860743Notes

Reaction equation

HRID 860743 reaction equation
[OH-].[Na+].[CH:3]1([C:9]2[C:10]3[CH:11]=[CH:12][C:13]([C:28]([O:30]C)=[O:29])=[CH:14][C:15]=3[N:16]3[CH2:22][C:21](=[O:23])[CH2:20][C:19]4[CH:24]=[CH:25][CH:26]=[CH:27][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:28]([OH:30])=[O:29])=[CH:14][C:15]=3[N:16]3[CH2:22][C:21](=[O:23])[CH2:20][C:19]4[CH:24]=[CH:25][CH:26]=[CH:27][C:18]=4[C:17]=23)[CH2:4][CH2:5][CH2:6][CH2:7][CH2:8]1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 58765241methyl 13-cyclohexyl-6,7-dihydro-6-oxo-5H-indolo[2,1-a][2]benzazepine-10-carboxylate

Product 1

HCID 5876518713-Cyclohexyl-6,7-dihydro-6-oxo-5H-indolo[2,1-a][2]benzazepine-10-carboxylic acidYield 92.7%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
90 °C

Procedure

Sodium hydroxide (0.2 mL of 1 N, 0.2 mmol) was added to a solution of the Methyl 13-cyclohexyl-6,7-dihydro-6-oxo -5H-indolo[2,1-a][2]benzazepine-10-carboxylate (20 mg, 0.052 mmol) in methanol (0.5 mL) and tetrahydrofuran (0.5 mL) in a microwave vial. The vial was sealed and the contents heated at 90° C. for 5 min in a microwave apparatus. The solution was acidified with dilute hydrochloric acid to precipitate the crude acid. The solid was collected and 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 (18 mg, 92%). ESI-MS m/z 374 (MH+); 1H NMR (500 MHz, ACETONE-D6) δ 1.22–1.35 (m, 1 H) 1.41–1.58 (m, 2 H) 1.59–1.70 (m, 1 H) 1.73–1.85 (m, 2 H) 1.92–2.00 (m, 1 H) 2.11–2.26 (m, 3 H) 3.04 (m, 1 H) 3.60 (d, J=14.04 Hz, 1 H) 3.97 (d, J=13.73 Hz, 1 H) 4.56 (d, J=18.31 Hz, 1 H) 5.19 (d, J=18.31 Hz, 1 H) 7.51 (m, 2 H) 7.57 (t, J=7.32 Hz, 1 H) 7.66 (d, J=7.63 Hz, 1 H) 7.81 (dd, J=8.39, 1.37 Hz, 1 H) 8.03 (d, J=8.24 Hz, 1 H) 8.23 (s, 3 H).

Workup

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

Sources & evidence

ORD record
ord-00272bb7cf9740ca80debbc8c184bb6c
Source dataset
uspto-grants-2006_12
Patent number
US07153848B2

Reaction notes

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