Methanol → 2-(2'-Hydroxy-3'5-di-tert-butylphenyl) benzotriazole

HRID 1856418

Reaktionsgleichung

Reaktionsgleichung von HRID 1856418
[N+:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[N:10]=[N:11][C:12]1[CH:17]=[C:16]([C:18]([CH3:21])([CH3:20])[CH3:19])[CH:15]=[C:14]([C:22]([CH3:25])([CH3:24])[CH3:23])[C:13]=1[OH:26])([O-])=O.CO.[OH-].[Na+].[H][H]>P(OCCCC)(OCCCC)(OCCCC)=O.[Ni]>[OH:26][C:13]1[C:14]([C:22]([CH3:25])([CH3:24])[CH3:23])=[CH:15][C:16]([C:18]([CH3:21])([CH3:20])[CH3:19])=[CH:17][C:12]=1[N:11]1[N:10]=[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]2=[N:1]1

Komponenten

7

Edukt 4

HCID 887MethanolHCID 14798Sodium HydroxideHCID 1041102,4-Bis(1,1-dimethylethyl)-6-[2-(2-nitrophenyl)diazenyl]phenolHCID 178418361HCID 178418361, Verbindung

Produkt 1

HCID 774552-(2'-Hydroxy-3'5-di-tert-butylphenyl) benzotriazoleAusbeute 85,8 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 935NickelKatalysatorHCID 31357Tributyl PhosphateLösungsmittel

Versuchsvorschrift

Using the general procedure 6, 35.5 grams of 2-nitro-2'-hydroxy-3',5'-di-tert-butylazobenzene was suspended in 100 grams of tributyl phosphate, 50 grams of methanol and 4 grams of sodium hydroxide. To the suspension was then added 8 grams of Raney nickel catalyst and hydrogenation was carried out under 1 atmosphere of hydrogen at 45° C. for 7 hours. The catalyst was separated by filtration at 80° C. The above named product was obtained in the usual manner in a yield of 85.8%.

Aufarbeitung

  1. customThe catalyst was separated by filtration at 80° C
  2. customwas obtained in the usual manner in a yield of 85.8%

Quellen und Nachweise

ORD-Eintrag
ord-7689c388765c4881b0b07f82f8a08e49
Quelldatensatz
uspto-grants-1980_08
Patentnummer
US04219480

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