164623

Tropylium tetrafluoroborate

97%

• Synonym(s): Cycloheptatrienyl tetrafluoroborate, Tropylium fluoroborate
• Empirical Formula (Hill Notation): C₇H₇BF₄
• CAS Number: 27081-10-3
• Molecular Weight: 177.94
• Beilstein: 3574512
• EC Number: 248-214-5
• MDL number: MFCD00013402
• UNSPSC Code: 12352101
• PubChem Substance ID: 24850091
• NACRES: NA.22

Properties

• Assay: 97%
• mp: ~240 °C (dec.) (lit.)
• SMILES string: F[B-](F)(F)F.c1ccc[cH+]cc1
• InChI: 1S/C7H7.BF4/c1-2-4-6-7-5-3-1;2-1(3,4)5/h1-7H;/q+1;-1
• InChI key: SQVQHTIKOZVGLR-UHFFFAOYSA-N

Description

Application

Reactant or reagent involved in:

• Retro-Buchner reactions for synthesis of arylcyclopropanes
• Desymmetrization for access to homocalystegine analogs or aminocycloheptitols
• α-Cyanation of imines
• Stereoselective α-alkylation of aldehydes with stable carbocations
• Oxidative C-H activation of aliphatic aldehydes
• Electrochemical Redox transformations

Safety Information

• Pictograms: GHS05
• Signal Word: Danger
• Hazard Statements: H314
• Precautionary Statements: P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Hazard Classifications: Eye Dam. 1 - Skin Corr. 1B
• Storage Class Code: 8A - Combustible corrosive hazardous materials
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves