• Forms complexes with alkenes, used in the separation of mixtures; see, e.g.: Org. Synth. Coll., 5, 315 (1973).
• For a brief feature on uses of the reagent in synthesis, see: Synlett, 3016 (2005).
• Promotes the reactivity of NCS in the cleavage of 2-acylated 1,3-dithianes: Synthesis, 17 (1969), and of NBS in the 1-bromination of terminal alkynes: Angew. Chem. Int. Ed., 23, 727 (1984).
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The Hunsdiecker reaction of Ag salts of carboxylic acids with Br2 provides alkyl bromides with one less carbon atom which is lost as CO2; see, e.g.: Org. Synth. Coll., 3, 578 (1955). Reviews: Chem. Rev., 56, 219 (1956); Org. React., 9, 332 (1957). Compare also Mercury(II) oxide, A16157.•
In combination with Br2 or I2 in refluxing methanol, brings about the rearrangement of acetophenones to methyl arylacetates, a reaction previously induced by thallium(III) nitrate: J. Chem. Soc., Perkin 1, 235 (1982):

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For the alkylation of substrates by radicals derived from decarboxylation of acids, see Trimethylacetic acid, A10776.