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537349

Sigma-Aldrich

Ethyl acetoacetate

ReagentPlus®, 99%

Sinonimo/i:

EAA, Ethyl 3-oxobutanoate, Acetoacetic ester

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1 KG
CHF 68.90
3 KG
CHF 196.00

CHF 68.90

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1 KG
CHF 68.90
3 KG
CHF 196.00

About This Item

Formula condensata:
CH3COCH2COOC2H5
Numero CAS:
141-97-9
Peso molecolare:
130.14
Beilstein:
385838
Numero CE:
205-516-1
Numero MDL:
MFCD00009199
Codice UNSPSC:
12352100
ID PubChem:
24878213
NACRES:
NA.22

CHF 68.90

Spedizione prevista il02 giugno 2025

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Densità del vapore

4.48 (vs air)

Tensione di vapore

1 mmHg ( 28.5 °C)

Nome Commerciale

ReagentPlus®

Saggio

99%

Temp. autoaccensione

580 °F

Limite di esplosione

9.5 %

P. ebollizione

181 °C (lit.)

Punto di fusione

−43 °C (lit.)

Solubilità

water: soluble 130 g/L at 20 °C

Densità

1.029 g/mL at 20 °C (lit.)

Gruppo funzionale

ester
ketone

Stringa SMILE

CCOC(=O)CC(C)=O

InChI

1S/C6H10O3/c1-3-9-6(8)4-5(2)7/h3-4H2,1-2H3
XYIBRDXRRQCHLP-UHFFFAOYSA-N

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Applicazioni

Ethyl acetoacetate is a versatile reagent that can be used as a nucleophile in alkylation, conjugate addition and condensation reactions.[1] Some of its applications are:
  • Alkylation at the α-carbon of ethyl acetoacetate followed by hydrolysis and decarboxylation can afford a variety of methyl ketones.[2]
  • It also undergoes acylation at the α-carbon in the presence of MgCl2 and pyridine to give synthetically important intermediates.[3]
  • It can be used in Knoevenagel condensation with aliphatic, aromatic, and heteroaromatic aldehydes to produce α-alkylideneacetoacetates.[1][4]

Note legali

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Codice della classe di stoccaggio

10 - Combustible liquids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

164.3 °F - closed cup

Punto d’infiammabilità (°C)

73.5 °C - closed cup

Dispositivi di protezione individuale

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

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Certificati d'analisi (COA)

Lot/Batch Number
MKCX1299
0000365285
0000325013
MKCT5126
0000365285

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Knoevenagel-kondensationen mit titantetrachlorid/base?II: Alkyliden-und arylidenacet-bzw.-nitroessigester bei 0?22?.
Lehnert W
Tetrahedron, 28(3), 663-666 (1972)
Synthetic Applications of Dealkoxycarbonylations of Malonate Esters, β-Keto Esters, α-Cyano Esters and Related Compounds in Dipolar Aprotic Media-Part II.
Krapcho A P
Synthesis, 1982(11), 893-914 (1982)
Ethyl Acetoacetate.
eEROS (Encyclopedia of Reagents for Organic Synthesis) (2001)
Procedures for the acylation of diethyl malonate and ethyl acetoacetate with acid chlorides using tertiary amine bases and magnesium chloride.
Rathke MW and Cowan PJ.
The Journal of Organic Chemistry, 50(15), 2622-2624 (1985)
Gui-Rong Qu et al.
Organic letters, 11(8), 1745-1748 (2009-03-20)
A novel approach to the synthesis of purines bearing functionalized carbon substituents or methyl in position 6 was developed. Under different reaction conditions, 6-halopurine derivatives could react with ethyl acetoacetate efficiently to yield 2-(purin-6-yl)acetoacetic acid ethyl esters, (purin-6-yl)acetates and 6-methylpurines
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Articoli

Biginelli Reaction

The Biginelli Reaction is an acid-catalyzed, three-component reaction between an aldehyde, b-ketoester, and urea that produces tetrahydropyrimidones, which have potential pharmaceutical applications.

Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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