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Sigma-Aldrich

9-Azabicyclo[3.3.1]nonane N-oxyl

greener alternative

95%

Synonym(s):

9-Azabicyclo[3.3.1]nonane N-oxyl radical, ABNO

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About This Item

Empirical Formula (Hill Notation):
C8H14NO
CAS Number:
31785-68-9
Molecular Weight:
140.20
Beilstein/REAXYS Number:
1681761
UNSPSC Code:
12161600
PubChem Substance ID:
329767041
NACRES:
NA.22

assay

95%

form

solid

reaction suitability

reagent type: ligand

greener alternative product characteristics

Catalysis
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sustainability

Greener Alternative Product

mp

65-70 °C

greener alternative category

, Aligned

storage temp.

2-8°C

SMILES string

C[C@@]12CCC[C@@](C)(CCC1)N2[O]

InChI

1S/C10H18NO/c1-9-5-3-7-10(2,11(9)12)8-4-6-9/h3-8H2,1-2H3/t9-,10+

InChI key

GGWCZKZSILYISB-AOOOYVTPSA-N

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General description

9-Azabicyclo[3.3.1]nonane N-oxyl (ABNO) belongs to a sterically unhindered and stable class of nitroxyl radicals. It efficiently catalyzes the oxidation of alcohols to afford the corresponding carbonyl compounds. ABNO along with (MeObpy)CuI(OTf) (MeObpy =4,4′-dimethoxy-2,2′-bipyridine) comprises a catalytic system. This catalytic system is useful for the aerobic oxidation of all categories of alcohols.
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Application

9-Azabicyclo[3.3.1]nonane N-oxyl (ABNO) may be employed for the aerobic oxidation of alcohols.
Catalytic oxidant for copper-catalyzed greener oxidation of alcohols under aerobic conditions.

Copper(I)/ABNO-Catalyzed Aerobic Alcohol Oxidation: Alleviating Steric and Electronic Constraints of Cu/TEMPO Catalyst Systems

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

hcodes

H302,H318

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

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Practical Aerobic Alcohol Oxidation with Cu/Nitroxyl and Nitroxyl/NOx Catalyst Systems.
Miles KC and Stahl SS.
Aldrichimica Acta, 48(1), 8-8 (2015)
Masatoshi Shibuya et al.
The Journal of organic chemistry, 74(12), 4619-4622 (2009-05-30)
A practical, three-step synthetic route to 9-azabicyclo[3.3.1]nonane N-oxyl (ABNO, 3), an unhindered, stable class of nitroxyl radical, has been developed. ABNO exhibits a highly active nature compared with TEMPO in the catalytic oxidation of alcohols to their corresponding carbonyl compounds.
Janelle E Steves et al.
Journal of the American Chemical Society, 135(42), 15742-15745 (2013-10-17)
Cu/TEMPO catalyst systems promote efficient aerobic oxidation of sterically unhindered primary alcohols and electronically activated substrates, but they show reduced reactivity with aliphatic and secondary alcohols. Here, we report a catalyst system, consisting of ((MeO)bpy)Cu(I)(OTf) and ABNO ((MeO)bpy = 4,4'-dimethoxy-2,2'-bipyridine;

Articles

TEMPO Catalyzed Oxidations

TEMPO (2,2,6,6-Tetramethylpiperidinyloxy or 2,2,6,6-Tetramethylpiperidine 1-oxyl) and its derivatives are stable nitroxy radicals used as catalysts in organic oxidation reactions. TEMPO was discovered by Lebedev and Kazarnovskii in 1960. The stable free radical nature of TEMPO is due to the presence of bulky substituent groups, which hinder the reaction of the free radical with other molecules.

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