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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 번호
108-26-9
동의어
2,4-Dihydro-5-methyl-3H-pyrazol-3-one

사이즈 가격 ($) 수량 재고 여부
10g 32.60
50g 120.00
250g 418.00
장바구니에 추가 대량 견적에 추가 항목 보기

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

MDL
MFCD00020699
EINECS
203-565-3

화학적 특성

화학식
C4H6N2O
화학 식량
98.11
융점
220-224°
용해도
Slightly soluble in ethanol.

용도

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.

참고

Incompatible with oxidizing agents.

참조 문헌

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 해저드 및 주의 설명서

해저드 설명서 (EU): H315-H319-H335

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

주의 설명서: P261-P280a-P305+P351+P338-P304+P340-P405-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/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. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

기타 참조

통합 관세 코드
2933.19
TSCA(독성물질규제법)"
Yes
RTECS(화학물질 독성 등록)
UQ9451500

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