Hydrochloric Acid → (+/-)-13-Cyclohexyl-6,7-dihydro-6-hydroxymethyl-5H-indolo[2,1-a][2]benzazepine-10-carboxylic acid

HRID 860747Notes

Reaction equation

HRID 860747 reaction equation
[OH-].[Na+].[CH:3]1([C:9]2[C:10]3[CH:11]=[CH:12][C:13]([C:29]([O:31]C)=[O:30])=[CH:14][C:15]=3[N:16]3[CH2:22][CH:21]([CH2:23][OH:24])[CH2:20][C:19]4[CH:25]=[CH:26][CH:27]=[CH:28][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:29]([OH:31])=[O:30])=[CH:14][C:15]=3[N:16]3[CH2:22][CH:21]([CH2:23][OH:24])[CH2:20][C:19]4[CH:25]=[CH:26][CH:27]=[CH:28][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 16072734methyl 13-cyclohexyl-6-(hydroxymethyl)-6,7-dihydro-5H-indolo[2,1-a][2]benzazepine-10-carboxylate

Product 1

HCID 58765242(+/-)-13-Cyclohexyl-6,7-dihydro-6-hydroxymethyl-5H-indolo[2,1-a][2]benzazepine-10-carboxylic acidYield 69.4%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
100 °C

Procedure

Sodium hydroxide (0.2 mL of 1 N, 0.2 mmol) was added to a solution of methyl (±)-13-cyclohexyl-6,7-dihydro-6-hydroxymethyl-5H-indolo[2,1-a][2]benzazepine-10-carboxylate (15.0 mg, 0.037 mmol) in methanol (0.5 mL) and tetrahydrofuran (0.5 mL) in a microwave vial. The vial was sealed and the contents heated at 100° C. for 10 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 (10.0 mg, 69%). ESI-MS m/z 390 (MH+); 1H NMR (500 MHz, MeOD) δ 1.19–1.34 (m, 1 H) 1.36–1.56 (m, 2 H) 1.63 (m, 1 H) 1.74–1.87 (m, 2 H) 1.91–2.21 (m, 5 H) 2.37–2.60 (m, 1 H) 2.74 (m, 1 H) 2.97 (m, 1 H) 3.36 (m, 1 H) 3.47–3.67 (m, 2 H) 4.59 (m, 1 H) 7.38–7.50 (m, 4 H) 7.72 (m, 1 H) 7.88 (m, 1 H) 8.18 (m, 1 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-117866cf6f6843188d69904e04ff540f
Source dataset
uspto-grants-2006_12
Patent number
US07153848B2

Reaction notes

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