New Findings in the Electrophilic Addition of Halogens to Olefins

Electrophilic addition—so you thought you knew it all! Recent research into the title reaction shows that a reexamination of well‐established mechanisms by means of modern theoretical, analytica, and synthetic methods can be altogether worthwhile. For example. A. C. Legon et. al (Angew. Chem. Int. Ed. Engl. 1994, 33, 1512–1513) recently investigated the interactions between ethene and halogens with an FT microwave spectrometer equipped with a fast‐mixing nozzle.