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39565

Sigma-Aldrich

1,3-Dimethylbarbituric acid

≥99.0% (T)

Sinonimo/i:

1,3-Dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione

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50 G
CHF 76.10
250 G
CHF 244.00

CHF 76.10

Spedizione prevista il01 giugno 2025

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50 G
CHF 76.10
250 G
CHF 244.00

About This Item

Formula empirica (notazione di Hill):
C6H8N2O3
Numero CAS:
769-42-6
Peso molecolare:
156.14
Beilstein:
139810
Numero CE:
212-211-7
Numero MDL:
MFCD00006675
Codice UNSPSC:
12352100
ID PubChem:
57649861
NACRES:
NA.22

CHF 76.10

Spedizione prevista il01 giugno 2025

Richiedi un ordine bulk

Saggio

≥99.0% (T)

Stato

solid

Residuo alla calcinazione

≤0.1%

Punto di fusione

121-123 °C (lit.)
123-126 °C

Solubilità

hot water: soluble 0.5 g/10 mL, clear, colorless to faintly yellow

Stringa SMILE

CN1C(=O)CC(=O)N(C)C1=O

InChI

1S/C6H8N2O3/c1-7-4(9)3-5(10)8(2)6(7)11/h3H2,1-2H3
VVSASNKOFCZVES-UHFFFAOYSA-N

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Categorie correlate

Descrizione generale

1,3-Dimethylbarbituric acid (1,3-Dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione) is an active methylene compound. It undergoes hollow Pd6 water-soluble cage, [{(tmen)Pd}6(timb)4](NO3)12 (tmen= N,N,N′,N′-tetramethylethylenediamine, timb=1,3,5-tris(1-imidazolyl)benzene)-catalyzed Knoevenagel condensation reaction with pyrene-1-carboxaldehyde.[1] It undergoes self-sorted Pd7 molecular boat having an internal nanocavity (catalyst)-assisted Knoevenagel condensation reaction with various aromatic aldehydes.[1] It has been synthesized by reacting 1,3-dimethylurea, malonic acid and acetic anhydride in acetic acid. It is widely used for the synthesis of various synthetic intermediates and heterocyclic compounds.[2]

Applicazioni

1,3-Dimethylbarbituric acid may be used in the following studies:
  • Enantioselective synthesis of isochromene pyrimidinedione derivatives having five stereocenters, via one-pot Michael-Knoevenagel condensation-inverse-electron-demand hetero-Diels-Alder reaction.[3]
  • Synthesis of 5-aryl-6-(alkyl- or aryl-amino)-1,3-dimethylfuro [2,3-d]pyrimidine derivatives.[4]
  • Microwave promoted indirect functionalization of alcohols, via spirocyclisation employing a sequential one-pot Ir(III)/Pd(0) catalyzed process.[5]

Pittogrammi

CorrosionExclamation mark
GHS05,GHS07

Avvertenze

Danger

Indicazioni di pericolo

H302,H318

Classi di pericolo

Acute Tox. 4 Oral - Eye Dam. 1

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

dust mask type N95 (US), Eyeshields, Gloves

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Certificati d'analisi (COA)

Lot/Batch Number
WXBF5304V
WXBF4949V
WXBF3419V
WXBF4111V
WXBF3992V

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Slide 1 of 3

1 of 3

Barbituric acid for synthesis

Sigma-Aldrich

8.00133

Barbituric acid

4-Aminoantipyrine analytical standard

Supelco

43827

4-Aminoantipyrine

4-Aminoantipyrine reagent grade

Sigma-Aldrich

A4382

4-Aminoantipyrine

1, 3-Dimethylbarbituric Acid
Argintaru OA.
e-EROS Encyclopedia of Reagents for Organic Synthesis. (2011)
Shahram Lotfi et al.
Materials science & engineering. C, Materials for biological applications, 76, 153-160 (2017-05-10)
Electrochemical oxidation of trimipramine in the absence and presence of 1,3 dimethyl barbituric acid as a nucleophile in aqueous solution has been studied using cyclic voltammetry and controlled-potential coulometry electrolysis. Voltammetric studies of electro-oxidation of trimipramine were realized in a
Christian Löfberg et al.
Chemical communications (Cambridge, England), (48)(48), 5000-5002 (2006-12-06)
Microwave assisted indirect functionalization of alcohols with 1,3-dimethylbarbituric acid followed by spirocyclisation employing a sequential one-pot Ir(III)/Pd(0) catalysed process, involving the formation of three new C-C bonds, one spirocyclic ring and one di- or tri-substituted exocyclic alkene, is described.
María Victoria Roux et al.
The journal of physical chemistry. A, 115(14), 3167-3173 (2011-03-25)
This paper reports an experimental and computational thermochemical study on 1,3-dimethylbarbituric acid. The value of the standard (p° = 0.1 MPa) molar enthalpy of formation in the gas phase at T = 298.15 K has been determined. The energy of
Burkhard Knopf et al.
Environmental science and pollution research international, 28(13), 16244-16252 (2020-12-18)
Cyanide compounds are naturally emitted into the environment in low levels by degradation processes or emitted from anthropogenic sources. In surface water, complex cyanide compounds as well as "free cyanide" are present. The latter term covers hydrogen cyanide and cyanide
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Articoli

Knoevenagel Condensation Reaction

Knoevenagel Condensation is an organic reaction named after Emil Knoevenagel. It is a classic C-C bond formation reaction and a modification of the Aldol Condensation.

Questions

1–2 of 2 Questions  

  1. 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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  2. 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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