4-Chlorobenzylpiperazine → 1-{4-[4-(4-Chloro-benzyl)-piperazin-1-yl]-benzyl}-3-[3-(4-fluoro-phenoxy)-propyl]-1,3-dihydro-benzoimidazol-2-ylideneamine

HRID 410338Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 410338
Br[C:2]1[CH:29]=[CH:28][C:5]([CH2:6][N:7]2[C:11]3[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=3[N:9]([CH2:16][CH2:17][CH2:18][O:19][C:20]3[CH:25]=[CH:24][C:23]([F:26])=[CH:22][CH:21]=3)[C:8]2=[NH:27])=[CH:4][CH:3]=1.[Cl:30][C:31]1[CH:43]=[CH:42][C:34]([CH2:35][N:36]2[CH2:41][CH2:40][NH:39][CH2:38][CH2:37]2)=[CH:33][CH:32]=1.CC(C)([O-])C.[K+].C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1>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.[Pd].[Pd]>[Cl:30][C:31]1[CH:43]=[CH:42][C:34]([CH2:35][N:36]2[CH2:41][CH2:40][N:39]([C:2]3[CH:29]=[CH:28][C:5]([CH2:6][N:7]4[C:11]5[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=5[N:9]([CH2:16][CH2:17][CH2:18][O:19][C:20]5[CH:25]=[CH:24][C:23]([F:26])=[CH:22][CH:21]=5)[C:8]4=[NH:27])=[CH:4][CH:3]=3)[CH2:38][CH2:37]2)=[CH:33][CH:32]=1

Komponenten

7

Edukt 4

HCID 1348264-ChlorobenzylpiperazineHCID 634876Binap, (A+-)-HCID 23665647Potassium tert-butoxideHCID 462409921-(4-Bromo-benzyl)-3-[3-(4-fluoro-phenoxy)-propyl]-1,3-dihydro-benzoimidazol-2-ylideneamine

Produkt 1

HCID 462417081-{4-[4-(4-Chloro-benzyl)-piperazin-1-yl]-benzyl}-3-[3-(4-fluoro-phenoxy)-propyl]-1,3-dihydro-benzoimidazol-2-ylideneamineAusbeute 18 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 9811564Bis(dibenzylideneacetone)palladiumKatalysatorHCID 1140TolueneLösungsmittel

Reaktionsbedingungen

Temperatur
105 °C

Versuchsvorschrift

To a solution 1-(4-bromo-benzyl)-3-[3-(4-fluoro-phenoxy)-propyl]-1,3-dihydro-benzoimidazol-2-ylideneamine (0.25 g, 0.55 mmol) in toluene (20 ml) was added 1-(4-chloro-benzyl)-piperazine (0.16 g, 0.55 mmol), potassium t-butoxide (216 mg, 1.93 mmol), Pd2(dba)3 (35 mg, 0.038 mmol) and BINAP (48 mg, 0.077 mmol). Nitrogen was bubbled through the suspension for 5 min and then the reaction was heated to 105° C. for 24 h. After this time, the mixture was cooled to rt and filtered. The collected solids were washed with additional toluene and then the combined filtrate and washings were concentrated under reduced pressure. The crude product was purified by chromatography on silica to provide 1-{4-[4-(4-chloro-benzyl)-piperazin-1-yl]-benzyl}-3-[3-(4-fluoro-phenoxy)-propyl]-1,3-dihydro-benzoimidazol-2-ylideneamine (57 mg, 18%). HPLC-MS 584 [M+1]+, 293.

Aufarbeitung

  1. customNitrogen was bubbled through the suspension for 5 min
  2. temperatureAfter this time, the mixture was cooled to rt
  3. filtrationfiltered
  4. washThe collected solids were washed with additional toluene
  5. concentrationthe combined filtrate and washings were concentrated under reduced pressure
  6. customThe crude product was purified by chromatography on silica

Quellen und Nachweise

ORD-Eintrag
ord-210425b00db84b9caaaf70830f98f88e
Quelldatensatz
uspto-grants-2014_06
Patentnummer
US08759520B2

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