Pd‐Catalyzed Regioselective Isomerization‐Hydroformylation of Internal Olefins with <scp> HCO ₂ H </scp> and <i>N</i> ‐Formylsaccharin

Comprehensive Summary This work describes an effective Pd‐catalyzed isomerization‐hydroformylation of internal olefins with HCO 2 H and N ‐formylsaccharin, providing a wide variety of linear aldehydes in up to 72% yield with up to 18 : 1 l/b ratio. The olefin substrate can bear various functional groups. Conjugated olefins can also be efficiently isomerized and hydroformylated. The reaction is easy to operate and requires no handling of CO and H 2 . To the best of our knowledge, the current process represents the first example for Pd‐catalyzed efficient isomerization‐hydroformylation process of internal olefins to predominately give linear aldehydes.