Substance
ID:716773
Names and Identifiers
IUPAC name
cyclohepta-2,4,6-trien-1-ylium; tetrafluoroboranuide
IUPAC Traditional name
tropylium tetrafluoroborate
Synonyms
四氟硼酸卓鎓Tropylium tetrafluoroborate
Registration numbers
MDL Number
Beilstein Number
CAS Number
EC Number
Properties
Safety Information
Storage Warning
Moisture Sensitive
Hazard Class
8
UN Number
UN1759
Packing Group
III
Safety Statements
20-26-36/37/39-45-60
GHS Pictograms
Corrosive to metals, category 1
Skin corrosion, categories 1A,1B,1C
Serious eye damage, category 1
GHS Precautionary statements
P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A
European Hazard Symbols
Corrosive (C)GHS Hazard statements
H314-H318
Risk Statements
34
TSCA Listed
是
Physical Property
Melting Point
ca 240°C dec.
Product Information
Purity
97%
Molecule Details
No Data Available
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Molecular Spectra
No Data Available
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References
• Propargylsilanes react similarly: J. Org. Chem., 57, 6094 (1992).
• Reaction with a variety of nucleophiles leads to 7-substituted heptatrienes, e.g. active methylene compounds: Bull. Chem. Soc. Jpn., 50, 3425 (1977); J. Org. Chem., 42, 401 (1977), and organometallic reagents: Bull. Soc. Chim. Fr.2, 127, 245 (1990).
• Undergoes [3+2]-cycloaddition with allenylsilanes, in the presence of a non-nucleophilic acid scavenger, in a general route to azulenes: J. Am. Chem. Soc., 111, 389 (1989):
• For reduction to bitropyl (7,7'-bi-cycloheptatrienyl) by one-electron donating reagents such as low-valent Ti or V, see: Synthesis, 798 (1976).
• Interesting non-benzenoid aromatic system. For a review of 7-membered conjugated cyclic systems, see: Chem. Rev., 73, 293 (1973).