M. Periasamy et al., Novel synthesis of cyclobutanone derivatives via dimetalation of iminium ions with the TiCl4-trialkylamine reagent system, CHEM COMMUN, (18), 2001, pp. 1728-1729
Iminium salts are generated in situ, react with TiCl4-trialkylamines, and d
iaryl ketones to produce 3,3-diarylcyclobutanones in moderate to good yield
s.