Substance
ID:716134
Names and Identifiers
IUPAC Traditional name
dibenzo-18-crown-6
Synonyms
Dibenzo-18-crown-6二苯并-18-冠-6醚
IUPAC name
2,5,8,15,18,21-hexaoxatricyclo[20.4.0.09,14]hexacosa-1(26),9,11,13,22,24-hexaene
Registration numbers
Beilstein Number
CAS Number
EC Number
Merck Index
MDL Number
Properties
Safety Information
Risk Statements
36/37/38
RTECS
HP5386000
GHS Hazard statements
H315-H319-H335
GHS Precautionary statements
P261-P305+P351+P338-P302+P352-P321-P405-P501A
Safety Statements
26-37
TSCA Listed
是
GHS Pictograms
Acute toxicity (oral, dermal, inhalation), category 4
Skin irritation, category 2
Eye irritation, category 2
Skin sensitisation, category 1
Specific Target Organ Toxicity – Single exposure, category 3
European Hazard Symbols
Irritant (Xi)Physical Property
Boiling Point
380-384°C/679mm
Melting Point
160-164°C
Product Information
Purity
98+%
Molecule Details
No Data Available
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Molecular Spectra
No Data Available
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References
• Comparison of the rates of displacement of F- in 1-fluoro-2- or 4-nitrobenzene with KOMe and KO-t-Bu in the presence of this crown ether gave a result (t-BuO- >> MeO-) opposite to the pattern observed in its absence: J. Chem. Soc., Perkin 2, 55 (1973).
• In combination with Benzyltriethylammonium chloride, A13268, promotes the oxidative decarboxylation of arylacetic acids with NaIO4 to give high yields of the aryl aldehydes: Indian J. Chem. B, 35B, 151 (1996). Under the same conditions, phenacyl bromides are converted to benzoic acids.
• Catalyst for the halogenative cleavage of epoxides with Br2 or I2, giving halohydrins in high yields: J. Org. Chem., 63, 1455 (1998).
• Promotes the generation of bromochlorocarbene from Chlorodibromomethane, A16938: Syntheis, 783 (1977); Tetrahedron, 33, 363 (1977), and of dibromocarbene from Bromoform, A11904: Org. Synth., 75, 98 (1997).
• See also 18-Crown-6, A11249 and Appendix 2.
• Catalyst for the formation of phenacyl esters from phenacyl bromides and K salts of carboxylic acids in acetonitrile: Synth. Commun., 26, 1747 (1996).