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  2. Phenylboronic acid - Wikipedia

    en.wikipedia.org/wiki/Phenylboronic_acid

    Boronic esters result from the condensation of boronic acids with alcohols. This transformation is simply the replacement of the hydroxyl group by alkoxy or aryloxy groups. [4] This reversible reaction is commonly driven to product by the use of Dean-Stark apparatus or a dehydration agent to remove water. PhB(OH) 2 + 2 ROH ⇌ PhB(OR) 2 + 2 H 2 O

  3. Fluorobenzene - Wikipedia

    en.wikipedia.org/wiki/Fluorobenzene

    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

  4. Benzyl bromide - Wikipedia

    en.wikipedia.org/wiki/Benzyl_bromide

    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]

  5. 1-Bromo-4-fluorobenzene - Wikipedia

    en.wikipedia.org/wiki/1-Bromo-4-fluorobenzene

    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.

  6. Finkelstein reaction - Wikipedia

    en.wikipedia.org/wiki/Finkelstein_reaction

    An example involves the conversion of the ethyl ester of 5-bromovaleric acid to the iodide: [4] EtO 2 C(CH 2) 4 Br + NaI → EtO 2 C(CH 2) 4 I + NaBr. Potassium fluoride is used for the conversion of chlorocarbons into fluorocarbons. [5] Such reactions usually employ polar solvents such as dimethyl formamide, ethylene glycol, and dimethyl ...

  7. Sandmeyer reaction - Wikipedia

    en.wikipedia.org/wiki/Sandmeyer_reaction

    The most commonly employed Sandmeyer reactions are the chlorination, bromination, cyanation, and hydroxylation reactions using CuCl, CuBr, CuCN, and Cu 2 O, respectively. More recently, trifluoromethylation of diazonium salts has been developed and is referred to as a 'Sandmeyer-type' reaction.

  8. Reaction intermediate - Wikipedia

    en.wikipedia.org/wiki/Reaction_intermediate

    In chemistry, a reaction intermediate, or intermediate, is a molecular entity arising within the sequence of a stepwise chemical reaction. It is formed as the reaction product of an elementary step, from the reactants and/or preceding intermediates, but is consumed in a later step. It does not appear in the chemical equation for the overall ...

  9. Dibromomethane - Wikipedia

    en.wikipedia.org/wiki/Dibromomethane

    The bromochloromethane product from either reaction can further react in a similar manner: 6 CH 2 BrCl + 3 Br 2 + 2 Al → 6 CH 2 Br 2 + 2 AlCl 3 CH 2 BrCl + HBr → CH 2 Br 2 + HCl. In the laboratory, it is prepared from bromoform using sodium arsenite and sodium hydroxide: [4] CHBr 3 + Na 3 AsO 3 + NaOH → CH 2 Br 2 + Na 3 AsO 4 + NaBr