Ammonia → 3-[(1-methylpiperidin-4-yl)thio]-1H-indol-5-ol

HRID 36891Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 36891
B(Br)(Br)Br.C[O:6][C:7]1[CH:8]=[C:9]2[C:13](=[CH:14][CH:15]=1)[NH:12][CH:11]=[C:10]2[S:16][CH:17]1[CH2:22][CH2:21][N:20]([CH3:23])[CH2:19][CH2:18]1.N>C(Cl)(Cl)Cl>[CH3:23][N:20]1[CH2:19][CH2:18][CH:17]([S:16][C:10]2[C:9]3[C:13](=[CH:14][CH:15]=[C:7]([OH:6])[CH:8]=3)[NH:12][CH:11]=2)[CH2:22][CH2:21]1

Komponenten

5

Edukt 3

HCID 222AmmoniaHCID 25134Boron tribromideHCID 19936654HCID 19936654, Verbindung

Produkt 1

HCID 199366023-[(1-methylpiperidin-4-yl)thio]-1H-indol-5-olAusbeute 10,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6212ChloroformLösungsmittel2×

Versuchsvorschrift

A solution of boron tribromide (6.3 ml) in chloroform (16 ml) is added dropwise to a solution of 5-methoxy-3-[(1-methylpiperidin-4-yl)thio]-1H-indole (8 g, prepared in Example 41) in chloroform (105 ml) at 0° C. After 3 hours at room temperature, the reaction mixture is poured onto ice and rendered basic with aqueous ammonia. The organic phase is dried over sodium sulfate and concentrated. The oily residue is chromatographed on silica gel (eluent: CH2Cl2 /EtOH/iPrNH2 79/20/1) to give 3-[(1-methylpiperidin-4-yl)thio]-1H-indol-5-ol (0.8 g), which is recrystallized from xylene.

Aufarbeitung

  1. additionthe reaction mixture is poured onto ice
  2. dry with materialThe organic phase is dried over sodium sulfate
  3. concentrationconcentrated
  4. customThe oily residue is chromatographed on silica gel (eluent: CH2Cl2 /EtOH/iPrNH2 79/20/1)

Quellen und Nachweise

ORD-Eintrag
ord-17cb2abf67c74fc7b921c03b909954d2
Quelldatensatz
uspto-grants-1995_05
Patentnummer
US05418242

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