Potassium Carbonate → HCID 70984166, compound

HRID 2408696Notes

Reaction equation

HRID 2408696 reaction equation
[CH3:1][C:2]1[CH:10]=[CH:9][C:8]2[N:7]([CH2:11][CH:12]([C:14]3[CH:19]=[CH:18][N:17]=[CH:16][CH:15]=3)[OH:13])[C:6]3[CH2:20][CH2:21][NH:22][CH2:23][C:5]=3[C:4]=2[CH:3]=1.C(=O)([O-])[O-].[K+].[K+].Cl[CH2:31][C:32]([CH3:35])([OH:34])[CH3:33]>C(#N)C.O>[OH:13][CH:12]([C:14]1[CH:19]=[CH:18][N:17]=[CH:16][CH:15]=1)[CH2:11][N:7]1[C:8]2[CH:9]=[CH:10][C:2]([CH3:1])=[CH:3][C:4]=2[C:5]2[CH2:23][N:22]([CH2:31][C:32]([CH3:35])([OH:34])[CH3:33])[CH2:21][CH2:20][C:6]1=2

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 684091-Chloro-2-methylpropan-2-olHCID 68284096HCID 68284096, compound

Product 1

HCID 70984166HCID 70984166, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6342AcetonitrileSolvent

Conditions

Temperature
100 °C

Procedure

To a solution of 2-(8-methyl-1,2,3,4-tetrahydro-pyrido[4,3-b]indol-5-yl)-1-pyridin-4-yl-ethanol (200 mg, 0.651 mmol) in acetonitrile (4 mL), potassium carbonate (270 mg, 1.95 mmol) and 1-chloro-2-methyl-propan-2-ol (105 mg, 0.977 mmol) were added and the reaction mixture was stirred at 100° C. for 12 h. The reaction mixture was diluted with water (10 mL) and extracted with EtOAc (3×20 mL). The combined organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by column chromatography (Neutral alumina, 1% MeOH-DCM), to yield 1-[5-(2-hydroxy-2-pyridin-4-yl-ethyl)-8-methyl-1,3,4,5-tetrahydro-pyrido[4,3-b]indol-2-yl]-2-methyl-propan-2-ol. 1H NMR (CDCl3, freebase) δ (ppm): 8.6 (d, 2H), 7.27 (m, 2H), 7.2 (m, 2H), 7.0 (d, 1H), 5.08 (t, 1H), 4.19 (m, 2H), 3.9 (bs, 2H), 3.0-3.1 (m, 2H), 2.9 (m, 1H), 2.6 (s, 2H), 2.56 (m, 1H), 2.21 (s, 3H), 1.21 (s, 6H). Separation by chiral HPLC provides enantiomers II-84a-b.

Workup

  1. extractionextracted with EtOAc (3×20 mL)
  2. dry with materialThe combined organic layer was dried over anhydrous sodium sulfate
  3. concentrationconcentrated under reduced pressure
  4. customThe residue was purified by column chromatography (Neutral alumina, 1% MeOH-DCM)

Sources & evidence

ORD record
ord-4f3ddacdb5594f99b72f4bd90f9d4dd7
Source dataset
uspto-grants-2014_08
Patent number
US08815843B2

Reaction notes

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