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Bromobenzene is an aryl bromide and the simplest of the bromobenzenes, consisting of a benzene ring substituted with one bromine atom. Its chemical formula is C 6 H 5 Br . It is a colourless liquid although older samples can appear yellow.
For example, (C 6 H 5)(CH 3) 2 C + is referred to as a "benzylic" carbocation. The benzyl free radical has the formula C 6 H 5 CH 2 •. The benzyl cation or phenylcarbenium ion is the carbocation with formula C 6 H 5 CH + 2; the benzyl anion or phenylmethanide ion is the carbanion with the formula C 6 H 5 CH − 2.
Benzyl bromide is an organic compound with the formula C 6 H 5 CH 2 Br. The molecule consists of a benzene ring substituted with a bromomethyl group. It is a colorless liquid with lachrymatory properties. The compound is a reagent for introducing benzyl groups. [3] [4]
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 .
All three have been synthesized by various routes: 1-Bromo-2-chlorobenzene: from 2-chloroaniline, via diazotization followed by a Sandmeyer reaction [1]; 1-Bromo-3-chlorobenzene: by (3-chlorophenyl)trimethylgermanium by electrophilic substitution [2] [better source needed]
PhN=N-N(CH 2) 5 + 2 HF → PhF + N 2 + [(CH 2) 5 NH 2]F. Historical note: in Wallach's era, the element fluorine was symbolized with "Fl". Thus, his procedure is subtitled "Fluorbenzol, C 6 H 5 Fl". [1] On the laboratory scale, PhF is prepared by the thermal decomposition of the benzenediazonium tetrafluoroborate: PhN 2 BF 4 → PhF + BF 3 + N 2
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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 ...