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123-54-6 - 2,4-Pentanedione, 99% - Acetylacetone - acac - A14117 - Alfa Aesar

A14117 2,4-Pentanedione, 99%

CAS 번호
123-54-6
동의어
Acetylacetone
acac

사이즈 가격 ($) 수량 재고 여부
100ml 27.00
500ml 40.10
2500ml 147.00
장바구니에 추가 대량 견적에 추가 항목 보기

2,4-Pentanedione, 99%

MDL
MFCD00008787
EINECS
204-634-0

화학적 특성

화학식
C5H8O2
화학 식량
100.12
융점
-23°
비등점
140-141°
인화점
34°(93°F)
밀도
0.973
굴절률
1.4520
용해도
It is readily miscible with water.

용도

2,4-Pentanedione is used as a precursor to acetylacetonate, a common bidentate and a raw material for the synthesis of heterocyclic compounds. It is used in pharmaceuticals, organic intermediates for solvents, analytical reagents, tungsten and molybdenum in aluminum extraction agent.

참고

Incompatible with isocyanates, aldehydes, cyanides, peroxides, and anhydrides.

참조 문헌

A simple procedure for the synthesis of methyl ketones involves alkylation at the 3-position with an alkyl halide using K2CO3 in EtOH, with in situ acetyl cleavage: Org. Synth. Coll., 5, 767 (1973). Knoevenagel condensation with aldehydes in THF in the presence of K2CO3 also occurs with acetyl cleavage, providing a simple route to alkenyl ketones: Chem. Lett., 1325 (1978). With K2CO3 and TBAB, selective one-pot monoalkylation or dialkylation with different alkyl groups can be achieved: Synthesis, 688 (1989). 3-Arylation with aryl bromides takes place in the presence of Cu(I) or Cu(II) salts in DMF: Chem. Lett., 597 (1982); Org. Synth. Coll., 6, 36 (1988).

Strong bases, e.g. NaNH2, form the dianion which reacts with electrophiles, e.g. alkyl halides, esters, acyl halides, Michael acceptors, etc., at the less-stabilized terminal carbon: J. Org. Chem., 26, 1716 (1961); Tetrahedron Lett., 357 (1970); J. Org. Chem., 39, 2289 (1974); Org. Synth. Coll., 5, 848 (1973). For arylation at the 1-position, see Diphenyl­iodonium chloride, A15149. For reviews of dimetallation, see: Org. React., 17, 155 (1969); Synthesis, 509 (1977).

/n

Freeman, F. Mechanisms of Reactions of Sulfur Hydride Hydroxide: Tautomerism, Condensations, and C-Sulfenylation and O-Sulfenylation of 2,4-Pentanedione. J. Phys. Chem. A 2015, 119 (14), 3500-3517.

Freeman, F. Mechanisms of Reactions of Sulfur Hydride Hydroxide: Tautomerism, Condensations, and C-Sulfenylation and O-Sulfenylation of 2, 4-Pentanedione. J. Phys. Chem. A 2015, 199 (14), 3500-3517.

GHS 해저드 및 주의 설명서

해저드 설명서 (EU): H226-H302-H311-H331

Flammable liquid and vapour. Harmful if swallowed. Toxic in contact with skin. Toxic if inhaled.

주의 설명서: P210-P261-P280-P303+P361+P353-P405-P501a

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

기타 참조

Merck
14,81
바일슈타인
741937
위험 등급
3
포장 그룹
III
통합 관세 코드
2914.19
TSCA(독성물질규제법)"
Yes
RTECS(화학물질 독성 등록)
SA1925000

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