A New Synthetic Method for the Preparation of Indenones from Aromatic Imines. Ru<sub>3</sub>(CO)<sub>12</sub>-Catalyzed Carbonylation at an <i>ortho</i> C−H Bond in the Aromatic Imines
On irradiation (>290 nm) in the absence or presence of benzophenone, various aromatic aldehydes add to ketene dithioacetal S,S-dioxides to give the corresponding 1:1 adducts, which were shown to be synthetic precursors of indanone derivatives.