NoName_3327 → 1h-Indazole-4-diazonium tetrafluoroborate salt

HRID 253037

Reaktionsgleichung

Reaktionsgleichung von HRID 253037
[N:1]([O-])=O.[Na+].[NH:5]1[C:13]2[C:8](=[C:9]([NH2:14])[CH:10]=[CH:11][CH:12]=2)[CH:7]=[N:6]1.[F:15][B-:16]([F:19])([F:18])[F:17].[Na+]>O.Cl>[F:15][B-:16]([F:19])([F:18])[F:17].[NH:5]1[C:13]2[CH:12]=[CH:11][CH:10]=[C:9]([N+:14]#[N:1])[C:8]=2[CH:7]=[N:6]1

Komponenten

6

Edukt 3

HCID 413085NoName_3327HCID 4343483Sodium TetrafluoroborateHCID 23668193Sodium Nitrite

Produkt 1

HCID 574203391h-Indazole-4-diazonium tetrafluoroborate saltAusbeute 20 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 313Hydrochloric AcidLösungsmittelHCID 962WaterLösungsmittel

Versuchsvorschrift

An aqueous solution of sodium nitrite (337 mg, 4.89 mmol) in water (2 mL) was added dropwise to a suspension of 1H-indazol-4-ylamine (631 mg, 4.74 mmol) in 6M hydrochloric acid (7.2 mL) at below 0° C. After stirring for 30 minutes sodium tetrafluoroborate (724 mg) was added. The reaction mixture became very thick and was filtered and washed briefly with water to yield 1H-indazole-4-diazonium, tetrafluoroborate salt (69) (218 mg, 20%) as a deep red solid.

Aufarbeitung

  1. additionwas added
  2. filtrationwas filtered
  3. washwashed briefly with water

Quellen und Nachweise

ORD-Eintrag
ord-aaced77d48974496b8a6fc33f73e06a5
Quelldatensatz
uspto-grants-2011_01
Patentnummer
US07872003B2

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