Novel photochemical addition of aromatic aldehydes to ketene dithioacetal S,S-dioxides and its application to organic synthesis

Article abstract of DOI:10.1016/S0040-4039(98)02052-8

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.