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Sigma-Aldrich

1,2,3,4,5-Pentamethylcyclopentadiene

95%

Sinônimo(s):

1,2,3,4,5-Pentamethyl-1,3-cyclopentadiene

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About This Item

Fórmula empírica (Notação de Hill):
C10H16
Número CAS:
Peso molecular:
136.23
Beilstein:
1849832
Número CE:
Número MDL:
Código UNSPSC:
12352100
ID de substância PubChem:
NACRES:
NA.22
Preço e disponibilidade não estão disponíveis no momento.

Nível de qualidade

Ensaio

95%

índice de refração

n20/D 1.474 (lit.)

p.e.

58 °C/13 mmHg (lit.)

densidade

0.87 g/mL at 25 °C (lit.)

cadeia de caracteres SMILES

CC1C(C)=C(C)C(C)=C1C

InChI

1S/C10H16/c1-6-7(2)9(4)10(5)8(6)3/h6H,1-5H3

chave InChI

WQIQNKQYEUMPBM-UHFFFAOYSA-N

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Descrição geral

Mechanism of the Diels-Alder reaction of paramagneticendohedral metallofullerene and 1,2,3,4,5-pentamethylcyclopentadiene has been studied.[1] Three-step large-scale preparation of 1,2,3,4,5-pentamethylcyclopentadiene has been reported.[2] Reaction of 1,2,3,4,5-pentamethylcyclopentadiene (HCp*) with actinide ions in gas phase has been investigated by laser ablation mass spectrometry.[3] It undergoes radical cation catalyzed cycloaddition with electron rich allenes to form Diels-Alder product.[4]

Aplicação

1,2,3,4,5-pentamethylcyclopentadiene was used as:
  • Growth modifier chemical, during metal organic chemical vapour deposition of iron from iron pentacarbonyl.[5]
  • Ligand in "one-pot" iridium-catalyzed transformation of alcohols to amides via the intermediacy of oximes.[6]
  • Raw material for the synthesis of [Cp*Rh(bpy)H2O]2+ (Cp* = pentamethylcyclopentadienyl, bpy = 2,2′-bipyridyl), an electron mediator in the regeneration process of NADH.[7]

Pictogramas

Flame

Palavra indicadora

Warning

Frases de perigo

Classificações de perigo

Flam. Liq. 3

Código de classe de armazenamento

3 - Flammable liquids

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

111.2 °F - closed cup

Ponto de fulgor (°C)

44 °C - closed cup

Equipamento de proteção individual

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


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An improved synthesis of 1,2,3,4,5-pentamethylcyclopentadiene.
Kohl FX and Jutzi P.
Journal of Organometallic Chemistry, 243(1), 119-121 (1983)
Synth. React. Inorg. Met.-Org. Chem. , 24, 395-395 (1994)
The Aminium Salt and Photoinduced Electron Transfer Initiated Diels-Alder Cycloaddition of Electron-rich Allenes: Evidence for a Stepwise Mechanism and the Importance of Steric and Electronic Effects for the Reactivity of Distonic Radical Cation Intermediates.
Schmittel M, et al.
Chemistry (Weinheim An Der Bergstrasse, Germany), 2(8), 1031-1040 (1996)
Nathan A Owston et al.
Organic letters, 9(1), 73-75 (2006-12-29)
[reaction: see text] The iridium catalyst [Ir(Cp*)Cl2]2 is effective for the rearrangement of oximes to furnish amides. The reaction has been combined with catalytic transfer hydrogenation between an alcohol and alkene to allow the conversion of alcohols into amides in
Journal of Organometallic Chemistry, 472, 359-359 (1994)

Artigos

The Diels–Alder reaction is the reaction between a conjugated diene and an alkene (dienophile) to form unsaturated six-membered rings. It is also referred to as a cycloaddition.

Questions

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  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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