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4-Trifluoromethylbenzaldehyde is the organofluorine compound with the formula CF 3 C 6 H 4 CHO. Two other isomers are also known: 2-trifluoromethylbenzaldehyde and 3-trifluoromethylbenzaldehyde. These compounds are derivatives of benzaldehyde with trifluoromethyl substituents.
1,2,3-Tribromobenzene [1] [2] 1,2,4-Tribromobenzene [3] [4] 1,3,5-Tribromobenzene [5] [6] Structure Molecular formula: C 6 H 3 Br 3: Molar mass: 314.802 g/mol Appearance colorless solid CAS number [608-21-9] [615-54-3] [626-39-1] Properties Solubility in water: practically insoluble Melting point: 87.5 °C 41–43 °C 122 °C Boiling point: 274 ...
The [BAr F 4] − anion with four fluorinated aryl groups distributed tetrahedrally about a central boron atom. Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate is an anion with chemical formula [{3,5-(CF 3) 2 C 6 H 3} 4 B] −, which is commonly abbreviated as [BAr F 4] −, indicating the presence of fluorinated aryl (Ar F) groups.
The reaction takes place in a two-phase mixture of p-xylene and water as solvent, in the presence of catalytic PdCl 2 (NCPh) 2 and triphenylphosphine (PPh 3), tetrabutylammonium iodide (TBAI) as a phase-transfer catalyst, and sodium hydroxide as a base. Below is an example reaction of 1,3-dibromobenzene to isophthalic acid. [1]
4-Fluorobromobenzene is synthesized via bromination of fluorobenzene in the presence of a Lewis acid catalyst such as iron(III) bromide or aluminium tribromide. [2]4-Bromofluorobenzene is regarded by the Toxic Substances Control Act as a high production volume chemical, that is, a chemical that 1 million pounds (about 500 tonnes) per year is either produced in or imported to the United States.
The trifluoromethyl group is a functional group that has the formula-CF 3. The naming of is group is derived from the methyl group (which has the formula -CH 3), by replacing each hydrogen atom by a fluorine atom. Some common examples are trifluoromethane H– CF 3, 1,1,1-trifluoroethane H 3 C – CF 3, and hexafluoroacetone F 3 C –CO– CF 3.
The first to investigate trifluoromethyl groups in relationship to biological activity was F. Lehmann in 1927. [5] An early review appeared in 1958. [6] An early synthetic method was developed by Frédéric Swarts in 1892, [7] based on antimony fluoride.
Chemical formula. C 8 H Cl 4 F 3 N 2: Molar mass: 323.91 g·mol −1 Hazards Lethal dose or concentration (LD, LC): LD 50 (median dose) 23 mg/kg (mice ...