Toluene → 1-[3-(3-Thienyl)phenyl]piperazine

HRID 1158718

Reaktionsgleichung

Reaktionsgleichung von HRID 1158718
Br[C:2]1[CH:3]=[C:4]([N:8]2[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]2)[CH:5]=[CH:6][CH:7]=1.[S:14]1[CH:18]=[CH:17][C:16](B(O)O)=[CH:15]1.C(=O)([O-])[O-].[Na+].[Na+].C1(C)C=CC=CC=1>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O>[S:14]1[CH:18]=[CH:17][C:16]([C:2]2[CH:3]=[C:4]([N:8]3[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]3)[CH:5]=[CH:6][CH:7]=2)=[CH:15]1

Komponenten

7

Edukt 4

HCID 1140TolueneHCID 10340Sodium CarbonateHCID 581760Thiophene-3-boronic acidHCID 27571541-(3-Bromophenyl)piperazine

Produkt 1

HCID 589851401-[3-(3-Thienyl)phenyl]piperazineAusbeute 83,8 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 962WaterLösungsmittel

Versuchsvorschrift

A mixed solution of 1-(3-bromophenyl)-piperazine (300 mg, 1.24 mmol), 3-thienylboronic acid (239 mg, 1.87 mmol), tetrakis(triphenylphosphine)palladium (173 mg, 0.149 mmol), 2N aqueous solution of sodium carbonate (4.98 ml, 9.95 mmol), and toluene (12 ml) was stirred at 95° C. for 15 hours under a nitrogen atmosphere. After cooling to room temperature, water was poured into the reaction solution, and extracted with ethyl acetate. The extract was washed with water, dried over anhydrous magnesium sulfate, and the solvent was distilled away under reduce pressure. The residue was purified by basic silica gel column chromatography (ethyl acetate) to give the titled compound 254 mg (83.5%) as an oil.

Aufarbeitung

  1. extractionextracted with ethyl acetate
  2. washThe extract was washed with water
  3. dry with materialdried over anhydrous magnesium sulfate
  4. distillationthe solvent was distilled away
  5. customThe residue was purified by basic silica gel column chromatography (ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-a3460c4451564704923857d88a360514
Quelldatensatz
uspto-grants-2010_10
Patentnummer
US07812025B2

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