Cookies disclaimer

I agree Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our website without changing the browser settings you grant us permission to store that information on your device.

108-26-9 - 3-Methyl-2-pyrazolin-5-one, 98+% - 2,4-Dihydro-5-methyl-3H-pyrazol-3-one - A10253 - Alfa Aesar

A10253 3-Methyl-2-pyrazolin-5-one, 98+%

CAS-Nummer
108-26-9
Synonyme
2,4-Dihydro-5-methyl-3H-pyrazol-3-one

Größe Preis ($) Menge Verfügbarkeit
10g 34,30
50g 126,69
250g 341,60
Zum Warenkorb hinzufügen Zur Angebotsanfrage hinzufügen Artikel anzeigen

3-Methyl-2-pyrazolin-5-one, 98+%

MDL
MFCD00020699
EINECS
203-565-3

Chemische Eigenschaften

Formel
C4H6N2O
Molmasse
98.11
Schmelzpunkt
220-224°
Löslichkeit
Slightly soluble in ethanol.

Anwendungen

3-Methyl-2-pyrazolin-5-one is used in the preparation of spirocyclic [indole-3,4'-pyrano[2,3-c]pyrazole] by reacting with isatins and malonitrile in the presence of sodium bromide as electrolyte.

Bemerkungen

Incompatible with oxidizing agents.

Literaturverweise

Vereshchagin, A. N.; Elinson, M. N.; Dorofeeva, E. O.; Nasybullin, R. F.; Bushmarinov, I. S.; Goloveshkin, A. S.; Egorov, M. P. Electrocatalytic cyclization of 3-(5-hydroxy-3-methylpyrazol-4-yl)-3-arylpropionitriles: ‘one-pot’ simple fast and efficient way to substituted spirocyclopropylpyrazolones. Electrochim. Acta 2015, 165, 116-121.

Wang, H. X.; Wu, L. L.; Wang, Y. M.; Zhou, Z. H. Organocatalyzed asymmetric tandem Michael-cyclization reaction of 4-benzylidene-3-methylpyrazol-5-ones and malononitrile: stereocontrolled construction of pyrano[2,3-c]pyrazole scaffold. RSC Adv. 2015, 5 (53), 42836-42842.

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
2933.19
TSCA
Yes
RTECS
UQ9451500

Empfohlen

  • A16265

    Hexanal, 98%
  • A16935

    Hydrogen chloride, 4M in 1,4-dioxane, 99%
  • 30562

    1,10-Phenanthroline iron(II) sulfate, 0.025M aq. soln.
  • 35650

    Cerium(IV) sulfate, 0.1N Standardized Solution
  • 42264

    Acetonitrile-d<sub>3</sub>, 99.8% (Isotopic)

Kürzlich angesehen

Chemikalien

Life science

Metalle und Stoffe

Katalysatoren

Forschungs- und Laborbedarf