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252832

Sigma-Aldrich

Tropone

97%

Sinónimos:

2,4,6-Cycloheptatrien-1-one

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About This Item

Fórmula empírica (notación de Hill):
C7H6O
Número de CAS:
539-80-0
Peso molecular:
106.12
Beilstein/REAXYS Number:
1902335
EC Number:
208-725-6
MDL number:
MFCD00014331
UNSPSC Code:
12352100
PubChem Substance ID:
24855242
NACRES:
NA.22

assay

97%

form

liquid

refractive index

n20/D 1.615 (lit.)

bp

113 °C/15 mmHg (lit.)

density

1.094 g/mL at 25 °C (lit.)

storage temp.

−20°C

SMILES string

O=C1C=CC=CC=C1

InChI

1S/C7H6O/c8-7-5-3-1-2-4-6-7/h1-6H

InChI key

QVWDCTQRORVHHT-UHFFFAOYSA-N

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General description

Metal-catalyzed [6+3] cycloaddition of tropone with azomethine ylides has been reported.

Application

Tropone has been used in synthesis of:
  • bicyclic δ-lactones via heterocyclic carbine-catalyzed [8+3] annulation pathway
  • 6,7-benzobicyclo [3.2.2] nona-3,6,8-trien-2-one via thermal addition to bezyne

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves

Certificados de análisis (COA)

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Vijay Nair et al.
The Journal of organic chemistry, 71(23), 8964-8965 (2006-11-04)
A novel protocol for the annulation of tropone to enals involving nucleophilic heterocyclic carbene (NHC) catalyzed homoenolate formation has been developed. Interestingly, the reaction led to bicyclic delta-lactones instead of the expected gamma-spirolactones, presumably by the uncommon [8 + 3]
Barry M Trost et al.
Journal of the American Chemical Society, 130(45), 14960-14961 (2008-10-22)
The cyanosubstituted trimethylenemethane donor undergoes palladium-catalyzed [6 + 3] cycloaddition with a variety of tropones to yield bicyclo[4.3.1]decadienes in excellent regio-, diastereo-, and enantioselectivity. Products of the Pd-TMM [6 + 3] cycloaddition participate in a thermal [3,3] sigmatropic rearrangement to
K P Randau et al.
Die Pharmazie, 64(5), 350-351 (2009-06-18)
Two tropone derivatives, orobanone (1), previously isolated from Orobanche rapum-genistae, and the new natural product pernambucone (3,8-dimethyl-5-isopropyl-2,3-dihydro-1H-azulene-1,6-dione, 2), were isolated from the sterm bark of Croton argyroglossum. The structures were elucidated from spectroscopic data.
L Isakovic et al.
Organic letters, 3(26), 4189-4192 (2002-01-11)
The carbocyclic core of CP-225,917 and CP-263,114 is accessible through the [6+4] cycloaddition of a tropone with a 2-substituted cyclopentadiene. Examination of this reaction has revealed for the first time that this cycloaddition process is catalyzed by Lewis acids, including
M Carmen Carreño et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 14(2), 621-636 (2007-10-09)
An efficient synthesis of 4-aminotropones has been achieved in excellent yields by simple treatment of 4-amino-4-[(p-tolylsulfinyl)methyl]-2,5-cyclohexadienones (p-quinamines) with NaH. The method allowed regiocontrolled access to 3-methyl, 5-methyl- and 3,5-dimethyl-substituted derivatives starting from p-quinamines with adequate substituents at the cyclohexadienone moiety
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