Potassium Iodide → 5-Chloro-2-(4-{3-[7-(1-hydroxy-1-methyl-ethyl)-11H-10-oxa-1-aza-dibenzo[a,d]cyclohepten-5-ylidene]-propyl}-piperazin-1-yl)-benzoic Acid Methyl Ester

HRID 242644Notes

Reaction equation

[CH3:1][O:2][C:3](=[O:17])[C:4]1[CH:9]=[C:8]([Cl:10])[CH:7]=[CH:6][C:5]=1[N:11]1[CH2:16][CH2:15][NH:14][CH2:13][CH2:12]1.N1C(C)=CC=CC=1C.[I-].[K+].Br[CH2:29][CH2:30][CH:31]=[C:32]1[C:38]2[CH:39]=[CH:40][CH:41]=[N:42][C:37]=2[CH2:36][O:35][C:34]2[CH:43]=[CH:44][C:45]([C:47]([OH:50])([CH3:49])[CH3:48])=[CH:46][C:33]1=2>C(O)(C)C>[CH3:1][O:2][C:3](=[O:17])[C:4]1[CH:9]=[C:8]([Cl:10])[CH:7]=[CH:6][C:5]=1[N:11]1[CH2:16][CH2:15][N:14]([CH2:29][CH2:30][CH:31]=[C:32]2[C:38]3[CH:39]=[CH:40][CH:41]=[N:42][C:37]=3[CH2:36][O:35][C:34]3[CH:43]=[CH:44][C:45]([C:47]([OH:50])([CH3:49])[CH3:48])=[CH:46][C:33]2=3)[CH2:13][CH2:12]1

Participants

Conditions

Temperature: 80 °C

Procedure

To a solution of 5-chloro-2-piperazin-1-yl-benzoic acid methyl ester (0.23 g, 0.916 mmol) in isopropanol (8.0 mL) was added 2,6-lutidine (0.16 mL, 1.33 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 (0.26 g, 0.67 mmol) in portions over 2 h. The solution was then stirred at 80° C. for an additional 18 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.

Workup

concentrationThe reaction mixture was concentrated in vacuo
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-e01c71378e4e432a9bc688cc3dee0feb
Source dataset: uspto-grants-2014_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08653096B2

Reaction notes

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