Beilstein J. Org. Chem.2011,7, 543–552, doi:10.3762/bjoc.7.62
suggestion that side-by-side addition–elimination and ionization mechanisms operate, and the relative importance is dependent on the type of chloro- or chlorothioformate substrate and the solvent.
Keywords: addition–elimination; Grunwald–Winsteinequations; ionization; isobutyl chloroformate; isobutyl