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914311-50-5 - 3-Amino-4-bromo-1H-indazole, 97% - 4-Bromo-1H-indazol-3-amine - H33460 - Alfa Aesar

H33460 3-Amino-4-bromo-1H-indazole, 97%

CAS-Nummer
914311-50-5
Synonyme
4-Bromo-1H-indazol-3-amine

Größe Preis ($) Menge Verfügbarkeit
250mg 10,53
1g 101,28
5g 210,59
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3-Amino-4-bromo-1H-indazole, 97%

MDL
MFCD09909580

Chemische Eigenschaften

Formel
C7H6BrN3
Molmasse
212.05
Schmelzpunkt
142-144°
Löslichkeit
Slightly soluble.

Anwendungen

Microwave heating of 2-halobenzaldehydes or 2-haloacetophenones with phenylhydrazines at 160°C for 10 min quantitatively yielded the arylhydrazones, which were further cyclized to give 1-aryl-1H-indazoles via CuI/diamine-catalyzed N-arylation under microwave heating (160°C, 10 min). Good to excellent yields were observed for 2-iodo, 2-bromo, and 2-chloro benzaldehydes or acetophenones.

Bemerkungen

Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Store away from strong oxidizing agents. Refrigerate 2-7°C.

Literaturverweise

Regina Zibuck,; Mark A. Stahl,; Bobbi Barchiesi,; Peter S. Waalwijk,; Pauline Cohen-Fernandes,; Clarisse L. Habraken. Indazoles studies. 4. Thermolysis of 3-bromo-1-nitro-1H-indazoles in benzene and toluene. Formation of 1-phenyl-1H-indazoles. J. Org. Chem. 1984 , 49(18) ,3310-3314.

Chittari Pabba,; Hong-Jun Wang,; Susan R. Mulligan,; Zhen-Jia Chen,; Todd M. Stark,; Brian T. Gregg. Microwave-assisted synthesis of 1-aryl-1H-indazoles via one-pot two-step Cu-catalyzed intramolecular N-arylation of arylhydrazones. Tetrahedron Letters. 2005, 46 (44), 7553-7557.

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Sicherheitshinweise: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Harmonized Tariff Code
2933.99
TSCA
No

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