Water → HCID 54063721, compound

HRID 1816733Notes

Reaction equation

HRID 1816733 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].Br[C:15]1[CH:20]=[CH:19][C:18]([N:21]2[CH2:26][CH2:25][CH:24]([C:27]3[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=3)[CH2:23][CH2:22]2)=[CH:17][CH:16]=1.CC(C)([O-])C.[Na+].O>C1(C)C=CC=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C(Cl)(Cl)Cl.[Pd].[Pd].C1C=CC(P(C2C=CC3C(=CC=CC=3)C=2C2C3C(=CC=CC=3)C=CC=2P(C2C=CC=CC=2)C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C(OCC)(=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:15]2[CH:16]=[CH:17][C:18]([N:21]3[CH2:26][CH2:25][CH:24]([C:27]4[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=4)[CH2:23][CH2:22]3)=[CH:19][CH:20]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

9

Reactant 4

HCID 962WaterHCID 143452tert-Butyl piperazine-1-carboxylateHCID 22494716HCID 22494716, compoundHCID 23676156Sodium t-butoxide

Product 1

HCID 54063721HCID 54063721, compoundYield 76.8%

Reagents, catalysts & solvents 4

HCID 634876Binap, (A+-)-CatalystHCID 11029508Palladium, tris[mu-[(1,2-eta:4,5-eta)-(1E,4E)-1,5-diphenyl-1,4-pentadien-3-one]]di-, compd. with trichloromethane (1:1)CatalystHCID 1140TolueneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of piperazine-1-carboxylic acid tert-butyl ester (2.02 g), 1-(4-bromophenyl)-4-phenylpiperidine (2.86 g), tris(dibenzylideneacetone)(chloroform)-di-palladium(0) (0.19 g), (S)-(−)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (0.28 g) and sodium tert-butoxide (1.74 g) in toluene (29 ml) was stirred for 6 hours at 90° C. The reaction mixture was added to a mixture of water and ethyl acetate. The organic layer was taken and dried over magnesium sulfate. The magnesium sulfate was filtered off, and the filtrate was evaporated under reduced pressure. The residue was purified by column chromatography over silica using dichloromethane/methyl alcohol (50:1) as the elution to give 4-[4-(4-phenylpiperidin-1-yl)phenyl]piperazine-1-carboxylic acid tert-butyl ester (2.93 g).

Workup

  1. dry with materialdried over magnesium sulfate
  2. filtrationThe magnesium sulfate was filtered off
  3. customthe filtrate was evaporated under reduced pressure
  4. customThe residue was purified by column chromatography over silica
  5. washas the elution

Sources & evidence

ORD record
ord-97b9674b46cc4c44907a10ae1436f065
Source dataset
uspto-grants-2005_04
Patent number
US06884868B1

Reaction notes

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