HomeMCPWorkbenchSkills
HomeWorkbenchNotificationsMe
llms.txt · MCP GuidePrivacy Policy · Terms of Service · Supportv1.8.0
  1. Home
  2. /Reaction

Hydrochloric Acid → 2-(3,9-dimethyl-2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)-1-(piperazin-1-yl)ethanone

HRID 1481468
Notes
Print preview

Reaction equation

HRID 1481468 reaction equation
[H-].[Na+].[CH3:3][N:4]1[CH2:17][CH2:16][C:15]2[C:14]3[CH:13]=[C:12]([CH3:18])[CH:11]=[CH:10][C:9]=3[NH:8][C:7]=2[CH2:6][CH2:5]1.Cl[CH2:20][C:21]([N:23]1[CH2:28][CH2:27][N:26](C(OC(C)(C)C)=O)[CH2:25][CH2:24]1)=[O:22].Cl>C1COCC1>[CH3:3][N:4]1[CH2:17][CH2:16][C:15]2[C:14]3[CH:13]=[C:12]([CH3:18])[CH:11]=[CH:10][C:9]=3[N:8]([CH2:20][C:21]([N:23]3[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]3)=[O:22])[C:7]=2[CH2:6][CH2:5]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 313Hydrochloric Acid2×HCID 24758Sodium hydrideHCID 15829156Tert-butyl 4-(2-chloroacetyl)piperazine-1-carboxylateHCID 685600921,2,3,4,5,6-Hexahydro-3,9-dimethylazepino[4,5-b]indole

Product 1

HCID 593683982-(3,9-dimethyl-2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)-1-(piperazin-1-yl)ethanone

Reagents, catalysts & solvents

1
HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of sodium hydride (46 mg, 1.16 mmol) in THF (5 ml), 3,9-dimethyl-1,2,3,4,5,6-hexahydroazepino[4,5-b]indole (0.1 g, 0.46 mmol) was added at 0° C. and stirred at RT for 30 min. tert-Butyl 4-(2-chloroacetyl)piperazine-1-carboxylate (147 mg, 0.55 mmol) was added slowly dropwise at RT and stirred for 2 h at RT. After completion of the reaction (monitored by TLC & LCMS), the reaction was quenched with ice water and extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous sodium sulfate and evaporated under reduced pressure. Crude product was purified by column chromatography to afford free base, which was converted to HCl salt using ethanolic HCl (38 mg). The NMR confirmed removal of the Boc group when ethanolic HCl was used. 1H NMR (CD3OD, DiHCl salt) δ (ppm): 7.3 (s, 1H), 7.22 (d, 1H), 7.0 (d, 1H), 5.23 (d, 2H), 3.95-4.10 (m, 4H), 3.7-3.9 (m, 4H), 3.36-3.43 (m, 4H), 3.1-3.22 (m, 4H), 3.0 (s, 3H), 2.4 (s, 3H).

Workup

  1. additionwas added slowly dropwise at RT
  2. customAfter completion of the reaction (monitored by TLC & LCMS)
  3. customthe reaction was quenched with ice water
  4. extractionextracted with ethyl acetate
  5. washThe organic layer was washed with brine
  6. dry with materialdried over anhydrous sodium sulfate
  7. customevaporated under reduced pressure
  8. customCrude product was purified by column chromatography
  9. customto afford free base, which
  10. customremoval of the Boc group when ethanolic HCl

Sources & evidence

ORD record
ord-24ea4d7d6b8e49bab68d7311dabbfaa1
Source dataset
uspto-grants-2016_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09409910B2

Reaction notes

Loading…

On this pageParticipantsProcedureWorkupSources & evidenceReaction notes