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214000

Sigma-Aldrich

TEMPO

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TEMPO
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98%

Synonyme(s) :

2,2,6,6-Tetramethylpiperidine 1-oxyl, 2,2,6,6-Tetramethyl-1-piperidinyloxy, free radical, TEMPO

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About This Item

Formule empirique (notation de Hill):
C9H18NO
Numéro CAS:
2564-83-2
Poids moléculaire :
156.25
Beilstein:
1422418
Numéro CE :
219-888-8
Numéro MDL:
MFCD00009599
Code UNSPSC :
12352119
ID de substance PubChem :
24852819
Nomenclature NACRES :
NA.22
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Niveau de qualité

200

Essai

98%

Forme

solid

Pertinence de la réaction

reagent type: oxidant

Caractéristiques du produit alternatif plus écologique

Catalysis
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sustainability

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Pf

36-38 °C (lit.)

Autre catégorie plus écologique

Aligned,

Température de stockage

2-8°C

Chaîne SMILES 

CC1(C)CCCC(C)(C)N1[O]

InChI

1S/C9H18NO/c1-8(2)6-5-7-9(3,4)10(8)11/h5-7H2,1-4H3

Clé InChI

QYTDEUPAUMOIOP-UHFFFAOYSA-N

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Description générale

TEMPO (2,2,6,6-Tetramethylpiperidin-1-oxyl) is a stable free radical commonly used as an oxidizing agent in organic synthesis.[1] Copper/TEMPO has been utilized in the catalytic oxidation of primary alcohols to aldehydes.[2]
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Application

TEMPO can be used:
  • As a catalytic oxidant for copper-catalyzed, greener oxidation of alcohols under aerobic conditions.
  • As a catalytic oxidant in the iodobenzene diacetae oxidation of nerol to neral.[3]
  • For trapping the styrenyl radical generated from benzoyl peroxide during nitroxide-mediated radical polymerization of styrene.[4]
  • In the carboxylation of water-resistant nanofibrillated cellulose (NFC) films.[5]

Copper(I)/TEMPO-catalyzed aerobic oxidation of primary alcohols to aldehydes with ambient air

Pictogrammes

Corrosion
GHS05

Mention d'avertissement

Danger

Mentions de danger

H314,H412

Classification des risques

Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1C

Code de la classe de stockage

8A - Combustible corrosive hazardous materials

Classe de danger pour l'eau (WGK)

WGK 2

Point d'éclair (°F)

152.6 °F - closed cup

Point d'éclair (°C)

67 °C - closed cup

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificats d'analyse (COA)

Lot/Batch Number
0000410613
0000404496
0000391327
0000391325
0000391326

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Geisslmeir, David; et al.
Monatshefte fur Chemie / Chemical Monthly, 136(9), 1591-1599 (2005)
Wan Ru Leow et al.
Science (New York, N.Y.), 368(6496), 1228-1233 (2020-06-13)
Chemicals manufacturing consumes large amounts of energy and is responsible for a substantial portion of global carbon emissions. Electrochemical systems that produce the desired compounds by using renewable electricity offer a route to lower carbon emissions in the chemicals sector.
Solvent effect on (2, 2, 6, 6-Tetramethylpiperidine-1-yl) oxyl (TEMPO): a RISM-SCF-SEDD study.
Fernandez MJF and Sato H.
Theoretical Chemistry Accounts, 130(2-3), 299-304 (2011)
Block copolymer synthesis using a commercially available nitroxide-mediated radical polymerization (NMP) initiator.
Lee NS and Wooley KL.
Material Matters, 5, 8-15 (2010)
Jessica M Hoover et al.
Journal of the American Chemical Society, 135(6), 2357-2367 (2013-01-16)
Homogeneous Cu/TEMPO catalyst systems (TEMPO = 2,2,6,6-tetramethylpiperidine-N-oxyl) have emerged as some of the most versatile and practical catalysts for aerobic alcohol oxidation. Recently, we disclosed a (bpy)Cu(I)/TEMPO/NMI catalyst system (NMI = N-methylimidazole) that exhibits fast rates and high selectivities, even
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Contenu apparenté

Stahl Group – Professor Product Portal

he Stahl Lab focuses on the development of catalysts and catalytic reactions for selective oxidation of organic molecules, with particular emphasis on aerobic oxidation reactions.

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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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    Lowers NMR T1 in organic liquids

    A useful material for lowering NMR T1 in organic liquids.

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