8-chloro-2-methyl-1H,2H,3H,4H,5H-pyrido(4,3-b)indole → HCID 68487635, compound

HRID 1400542Notes

Reaction equation

HRID 1400542 reaction equation
[Cl:1][C:2]1[CH:10]=[CH:9][C:8]2[NH:7][C:6]3[CH2:11][CH2:12][N:13]([CH3:15])[CH2:14][C:5]=3[C:4]=2[CH:3]=1.[H-].[Na+].[CH3:18][C:19]1[CH:24]=[C:23]([C:25]2([CH3:28])[CH2:27][O:26]2)[CH:22]=[C:21]([CH3:29])[N:20]=1>CN(C=O)C>[Cl:1][C:2]1[CH:10]=[CH:9][C:8]2[N:7]([CH2:28][C:25]([C:23]3[CH:24]=[C:19]([CH3:18])[N:20]=[C:21]([CH3:29])[CH:22]=3)([OH:26])[CH3:27])[C:6]3[CH2:11][CH2:12][N:13]([CH3:15])[CH2:14][C:5]=3[C:4]=2[CH:3]=1

Participants

5

Reactant 3

HCID 196158-chloro-2-methyl-1H,2H,3H,4H,5H-pyrido(4,3-b)indoleHCID 24758Sodium hydrideHCID 86644767HCID 86644767, compound

Product 1

HCID 68487635HCID 68487635, compoundYield 84.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

8-Chloro-2,3,4,5-tetrahydro-2-methyl-1H-pyrido[4,3-b]indole (220 mg, 1 mmol) was dissolved in DMF and sodium hydride (120 mg, 3 mmol) was added. The reaction mixture was stirred for 10 min and 2,6-dimethyl-4-(2-methyloxiran-2-yl)pyridine (210.6 mg, 1.3 mmol) was added dropwise to the reaction mixture with constant stirring. The reaction mixture was stirred at RT overnight. The reaction mixture was poured on crushed ice and the precipitate obtained was filtered under vacuum; washed with water and hexane to obtain 1-(8-chloro-1,2,3,4-tetrahydro-2-methylpyrido[4,3-b]indol-5-yl)-2-(2,6-dimethylpyridin-4-yl)propan-2-ol (323 mg) which was dissolved in DCM (3 mL) and cooled to 0° C. Thionylchloride (3 mL) was added dropwise and the reaction mixture was allowed to cool to RT. The reaction mixture was then stirred at RT for 2 h. Thionylchloride was evaporated under vacuum by azeotropic distillation with DCM. 1N NaOH solution was added to basify (pH-12-13) the reaction mixture and the compound extracted with EtOAc (2×30 mL). The organic layer was concentrated under vacuum to get the crude desired product. The crude compound was further purified through reverse phase HPLC. Yield: 17 mg. 1H NMR (CD3OD, D1-HCl salt) δ (ppm): 7.95 (s, 2H), 7.66 (s, 1H), 7.58 (s, 1H), 7.25 (m, 2H), 4.70 (m, 1H), 4.40 (m, 1H), 3.90 (m, 1H), 3.62 (m, 1H), 3.22 (m, 2H), 3.10 (s, 6H), 2.10 (s, 3H).

Workup

  1. stirringThe reaction mixture was stirred at RT overnight
  2. additionThe reaction mixture was poured
  3. customon crushed ice
  4. customthe precipitate obtained
  5. filtrationwas filtered under vacuum
  6. washwashed with water and hexane

Sources & evidence

ORD record
ord-18549f95d14745f8a1becc48eb747cdb
Source dataset
uspto-grants-2014_12
Patent number
US08906925B2

Reaction notes

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