Formaldehyde → 4-(4-Methyl-1-piperazinyl)phenol

HRID 522485

Reaktionsgleichung

Reaktionsgleichung von HRID 522485
[N:1]1([C:7]2[CH:12]=[CH:11][C:10]([OH:13])=[CH:9][CH:8]=2)[CH2:6][CH2:5][NH:4][CH2:3][CH2:2]1.C=O.[C:16](O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C1COCC1.CC(O)=O>[CH3:16][N:4]1[CH2:3][CH2:2][N:1]([C:7]2[CH:8]=[CH:9][C:10]([OH:13])=[CH:11][CH:12]=2)[CH2:6][CH2:5]1

Komponenten

5

Edukt 3

HCID 712FormaldehydeHCID 92467p-(1-Piperazinyl)phenolHCID 5049666Sodium triacetoxyborohydride

Produkt 1

HCID 116224864-(4-Methyl-1-piperazinyl)phenolAusbeute 106,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 23444217Acetic acid tetrahydrofuranLösungsmittel

Versuchsvorschrift

4-(piperazin-1-yl)phenol 2 g (11.24 mmol) and formaldehyde 4.5 mL (37% in water, 56 mmol) were suspended in a mixture of THF/AcOH 5/1 and let under stirring at room temperature. After 30 minutes sodium triacetoxyborohydride 4.7 g (22.5 mmol) was added portion-wise. The reaction was let stir a few hours and evaporated down. The crude was purified on silica gel with AcOEt/EtOH/(NH3 7 N in MeOH) 8/2/0.2 to give 2.3 g of pink solid as a free base.

Aufarbeitung

  1. stirringThe reaction was let stir a few hours
  2. customevaporated down
  3. customThe crude was purified on silica gel with AcOEt/EtOH/(NH3 7 N in MeOH) 8/2/0.2

Quellen und Nachweise

ORD-Eintrag
ord-4ec99b628aaf4feb9ef037415756c670
Quelldatensatz
uspto-grants-2016_05
Patentnummer
US09333205B2

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