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Merck

157929

Sigma-Aldrich

Methyl(triphenylphosphoranyliden)acetat

98%

Synonym(e):

(Carbomethoxymethylen)-triphenylphosphoran, Methoxycarbonylmethylen-triphenylphosphoran

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€ 58,20
25 G
€ 114,00
100 G
€ 226,00

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5 G
€ 58,20
25 G
€ 114,00
100 G
€ 226,00

About This Item

Lineare Formel:
(C6H5)3P=CHCO2CH3
CAS-Nummer:
Molekulargewicht:
334.35
Beilstein:
618430
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352108
PubChem Substanz-ID:
NACRES:
NA.22

€ 58,20


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Qualitätsniveau

Assay

98%

Form

powder

Eignung der Reaktion

reaction type: C-C Bond Formation

mp (Schmelzpunkt)

168-172 °C (lit.)

Funktionelle Gruppe

ester
phosphine

SMILES String

COC(=O)C=P(c1ccccc1)(c2ccccc2)c3ccccc3

InChI

1S/C21H19O2P/c1-23-21(22)17-24(18-11-5-2-6-12-18,19-13-7-3-8-14-19)20-15-9-4-10-16-20/h2-17H,1H3

InChIKey

NTNUDYROPUKXNA-UHFFFAOYSA-N

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Anwendung

Wittig reagent for the two-carbon homologation of aldehydes to α,β-unsaturated esters.[1] Also used in an efficient synthesis of pyrazoles via reaction with methyl diazoacetate in the presence of triethylamine.[2]

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

Eyeshields, Gloves, type N95 (US)


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Analysenzertifikate (COA)

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In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.

Die Dokumentenbibliothek aufrufen

Tetrahedron Letters, 48, 883-883 (2007)
Tetrahedron, 63, 1074-1074 (2007)

Questions

1–2 of 2 Questions  
  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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