1-Methyl-4-piperidone → 2-Methyl-5-(2-(6-methylpyridin-3-yl)ethyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole-8-carboxylic acid

HRID 574422Notes

Reaction equation

HRID 574422 reaction equation
[CH3:1][C:2]1[N:7]=[CH:6][C:5]([CH2:8][CH2:9][N:10]([C:12]2[CH:21]=[CH:20][C:15]([C:16]([O:18]C)=[O:17])=[CH:14][CH:13]=2)N)=[CH:4][CH:3]=1.[CH3:22][N:23]1[CH2:28][CH2:27][C:26](=O)[CH2:25][CH2:24]1>Cl>[CH3:22][N:23]1[CH2:28][CH2:27][C:26]2[N:10]([CH2:9][CH2:8][C:5]3[CH:6]=[N:7][C:2]([CH3:1])=[CH:3][CH:4]=3)[C:12]3[CH:21]=[CH:20][C:15]([C:16]([OH:18])=[O:17])=[CH:14][C:13]=3[C:25]=2[CH2:24]1

Participants

4

Reactant 2

HCID 740491-Methyl-4-piperidoneHCID 68735268Methyl 4-(1-(2-(6-methylpyridin-3-yl)ethyl)hydrazinyl)benzoate

Product 1

HCID 578760502-Methyl-5-(2-(6-methylpyridin-3-yl)ethyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole-8-carboxylic acidYield 4.1%

Reagents, catalysts & solvents 1

HCID 313Hydrochloric AcidSolvent

Conditions

Temperature
100 °C

Procedure

Methyl 4-(1-(2-(6-methylpyridin-3-yl)ethyl)hydrazinyl)benzoate (0.1 g, 0.350 mmoles) and 1-methylpiperidin-4-one (0.052 g, 0.350 mmoles) was taken up in 1M HCl (4 mL) and heated at 100° C. for 18 hr. LCMS of the reaction mixture shows the formation of the product. The reaction mixture was concentrated and purified by reverse phase HPLC to give 5 mg of 2-Methyl-5-(2-(6-methylpyridin-3-yl)ethyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole-8-carboxylic acid, as a white solid, 4% yield.

Workup

  1. concentrationThe reaction mixture was concentrated
  2. custompurified by reverse phase HPLC

Sources & evidence

ORD record
ord-1f5d13333f604f82aef5477b89c1d3da
Source dataset
uspto-grants-2015_05
Patent number
US09034880B2

Reaction notes

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