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Dimethylformamide → 4-(1-(3-(10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene)-1-propyl)piperidin4-yl)butyric acid ethyl ester

HRID 1637223
Notes
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Reaction equation

HRID 1637223 reaction equation
Br[CH2:2][CH2:3][CH:4]=[C:5]1[C:11]2[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=2[CH2:9][CH2:8][C:7]2[CH:16]=[CH:17][CH:18]=[CH:19][C:6]1=2.[NH:20]1[CH2:25][CH2:24][CH:23]([CH2:26][CH2:27][CH2:28][C:29]([O:31][CH2:32][CH3:33])=[O:30])[CH2:22][CH2:21]1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O.C1C=CC=CC=1>[CH2:32]([O:31][C:29](=[O:30])[CH2:28][CH2:27][CH2:26][CH:23]1[CH2:24][CH2:25][N:20]([CH2:2][CH2:3][CH:4]=[C:5]2[C:11]3[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=3[CH2:9][CH2:8][C:7]3[CH:16]=[CH:17][CH:18]=[CH:19][C:6]2=3)[CH2:21][CH2:22]1)[CH3:33]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 17126855-(3-bromopropylidene)-10,11-dihydro-5H-dibenzo[a,d]cyclohepteneHCID 106318484-Piperidinebutanoic acid, ethyl ester

Product 1

HCID 540820164-(1-(3-(10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene)-1-propyl)piperidin4-yl)butyric acid ethyl esterYield 83%

Reagents, catalysts & solvents 2

HCID 241BenzeneSolventHCID 962WaterSolvent

Conditions

Temperature
120 °C

Procedure

A mixture of 5-(3-bromopropylidene)-10,11-dihydro-5H-dibenzo[a,d]cycloheptene (5.8 g, 19.8 mmol), ethyl 4-(piperidin-4-yl)butyrate (6.1 g, 29 mmol), potassium carbonate (2.9 g, 21 mmol) and N,N-dimethylformamide (10 ml) was heated at 120° C. for 5 h. After cooling, benzene (50 ml) and water (50 ml) were added and the phases were separated. The organic phase was dried and the solvent was evaporated in vacuo. The residue was purified by column chromatography on silica gel (50 g) using mixtures of benzene and chloroform as eluents to give 6.9 g (83%) of 4-(1-(3-(10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene)-1-propyl)piperidin-4-yl)butyric acid ethyl ester as an oil.

Workup

  1. temperatureAfter cooling
  2. customthe phases were separated
  3. customThe organic phase was dried
  4. customthe solvent was evaporated in vacuo
  5. customThe residue was purified by column chromatography on silica gel (50 g)

Sources & evidence

ORD record
ord-b7be46e3f65348f4b257f6dc24cff010
Source dataset
uspto-grants-2000_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06040318

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes