Piperidine → (E)-1-(2-hydroxyethyl)-4-(2-(9-(2-(2-methoxyethoxy)ethyl)-9H-carbazol-3-yl)vinyl)pyridinium chloride

HRID 1774075Notes

Reaction equation

HRID 1774075 reaction equation
[CH3:1][O:2][CH2:3][CH2:4][O:5][CH2:6][CH2:7][N:8]1[C:20]2[CH:19]=[CH:18][C:17]([CH:21]=O)=[CH:16][C:15]=2[C:14]2[C:9]1=[CH:10][CH:11]=[CH:12][CH:13]=2.[Cl-:23].[OH:24][CH2:25][CH2:26][N+:27]1[CH:32]=[CH:31][C:30]([CH3:33])=[CH:29][CH:28]=1.N1CCCCC1>C(O)C>[Cl-:23].[OH:24][CH2:25][CH2:26][N+:27]1[CH:32]=[CH:31][C:30](/[CH:33]=[CH:21]/[C:17]2[CH:18]=[CH:19][C:20]3[N:8]([CH2:7][CH2:6][O:5][CH2:4][CH2:3][O:2][CH3:1])[C:9]4[C:14]([C:15]=3[CH:16]=2)=[CH:13][CH:12]=[CH:11][CH:10]=4)=[CH:29][CH:28]=1

Participants

5

Reactant 3

HCID 8082PiperidineHCID 133080101-(2-Hydroxyethyl)-4-methylpyridinium chlorideHCID 866726799-(2-(2-methoxyethoxy)ethyl)-9H-carbazole-3-carbaldehyde

Product 1

HCID 57326943(E)-1-(2-hydroxyethyl)-4-(2-(9-(2-(2-methoxyethoxy)ethyl)-9H-carbazol-3-yl)vinyl)pyridinium chlorideYield 53%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A solution mixture of 3a (0.13 g, 0.75 mmol), 9 (0.27 g, 0.9 mmol) and piperidine (0.1 mL) in ethanol (30 mL) was heated to reflux overnight. After cooling down to room temperature, the organic solvent was removed by rotary evaporation. The residue was purified by recrystallization from methanol affording SPOH (0.18 g) as pale red solid in 53% yield. 1H NMR (400 MHz, DMSO-d6) δ 8.88 (d, J=6.8 Hz, 2H), 8.55 (s, 1H), 8.19 (m, 4H), 7.84 (d, J=8 Hz, 1H), 7.65 (m, 2H), 7.49 (m, 2H), 7.25 (t, J=7.2 Hz, 1H), 5.66 (s, 1H), 4.57 (m, 4H), 3.79 (m, 4H), 3.43 (m, 2H), 3.27 (m, 2H), 3.08 (s, 3H). 13C NMR (400 MHz, DMSO-d6) δ 153.4, 144.4, 142.4, 141.7, 140.8, 126.4, 126.3, 126.2, 122.7, 122.6, 122.1, 121.1, 120.3, 120.0, 119.7, 110.4, 110.2, 71.2, 69.8, 68.8, 61.6, 600.1, 58.1, 42.8. HRMS (MALDI-TOF) m/z Calcd for C26H29N2O3 417.2172 Found 417.2184 [M+].

Workup

  1. temperaturewas heated
  2. temperatureto reflux overnight
  3. customthe organic solvent was removed by rotary evaporation
  4. customThe residue was purified by recrystallization from methanol

Sources & evidence

ORD record
ord-1c6e205154464a349e821d76338e8749
Source dataset
uspto-grants-2016_02
Patent number
US09255933B2

Reaction notes

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