• For examples of the generation of dibromocarbene, using Potassium tert-butoxide, A13947, as base, see: Org. Synth. Coll., 6, 187 (1988); 7, 200 (1990). Alternatively, reactions can be carried out with aqueous OH- and a phase-transfer catalyst such as Benzyltriethylammonium chloride, A13268: Org. Synth. Coll., 8, 223 (1993), or using crown ether catalysis: Org. Synth., 75, 98 (1997).
• Under phase-transfer conditions, allylic bromides undergo nucleophilic displacement by the tribromomethyl anion: J. Chem. Soc., Chem. Commun., 210 (1979).