Potassium Iodide → 2-(5-{3-[4-(4-Chloro-2-methyl-phenyl)-piperazin-1-yl]-propylidene}-5,11-dihydro-10-oxa-1-aza-dibenzo[a, d]cyclohepten-7-yl)-propan-2-ol

HRID 457162Notes

Reaction equation

HRID 457162 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]2)=[C:4]([CH3:14])[CH:3]=1.N1C(C)=CC=CC=1C.[I-].[K+].Br[CH2:26][CH2:27][CH:28]=[C:29]1[C:35]2[CH:36]=[CH:37][CH:38]=[N:39][C:34]=2[CH2:33][O:32][C:31]2[CH:40]=[CH:41][C:42]([C:44]([OH:47])([CH3:46])[CH3:45])=[CH:43][C:30]1=2>C(O)(C)C>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[CH2:13][CH2:12][N:11]([CH2:26][CH2:27][CH:28]=[C:29]3[C:35]4[CH:36]=[CH:37][CH:38]=[N:39][C:34]=4[CH2:33][O:32][C:31]4[CH:40]=[CH:41][C:42]([C:44]([OH:47])([CH3:46])[CH3:45])=[CH:43][C:30]3=4)[CH2:10][CH2:9]2)=[C:4]([CH3:14])[CH:3]=1

Participants

6

Reactant 4

HCID 4875Potassium IodideHCID 79372,6-LutidineHCID 1008521-(4-Chloro-o-tolyl)piperazineHCID 666859992-[5-(3-Bromo-propylidene)-5,1 1-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl]-propan-2-ol

Product 1

HCID 667590462-(5-{3-[4-(4-Chloro-2-methyl-phenyl)-piperazin-1-yl]-propylidene}-5,11-dihydro-10-oxa-1-aza-dibenzo[a, d]cyclohepten-7-yl)-propan-2-olYield 54.6%

Reagents, catalysts & solvents 1

HCID 3776IsopropanolSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 1-(4-chloro-2-methyl-phenyl)-piperazine (0.13 g, 0.6 mmol) in isopropanol (6.0 mL) was added 2,6-lutidine (95 uL, 0.802 mmol) and catalytic potassium iodide. This mixture was heated to 80° C., and treated with 2-[5-(3-Bromo-propylidene)-5,11-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl]-propan-2-ol (0.15 g, 0.4 mmol), added in portions over 2 h. The solution was then stirred at 80° C. for an additional 12 h. The reaction mixture was concentrated in vacuo, then purified by flash chromatography on silica gel (gradient elution from 95% ethyl acetate/5% methanol to 90% ethyl acetate/10% methanol) to yield the title compound (0.11 g, 54%). 1H-NMR (DMSO) δ: 1.45 (6H, s), 2.30–2.65 (8H, m), 2.75–2.85 (4H, m), 3.30 (3H, d), 5.30 (2H, br s), 6.20 (1H, t), 6.75 (1H, d), 7.00–7.47 (6H, m), 7.80 (1H, dd), 8.50 (1H, dd). ESI-MS m/z: 504 (M+1), UV retention time: 1.65 min.

Workup

  1. additionadded in portions over 2 h
  2. concentrationThe reaction mixture was concentrated in vacuo
  3. custompurified by flash chromatography on silica gel (gradient elution from 95% ethyl acetate/5% methanol to 90% ethyl acetate/10% methanol)

Sources & evidence

ORD record
ord-1dea63d200e64c4cb6405f9575b0d4de
Source dataset
uspto-grants-2007_03
Patent number
US07186729B2

Reaction notes

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