Among many synthetically useful palladium-catalyzed transformations, 1 a reaction of uncommon pattern is the palladiumcatalyzed nucleophilic addition of organic halides to ketones and aldehydes, although such addition shown in eq 1 is the most frequently encountered reaction in traditional main-group metal chemistry. Nowadays, however, the reaction of this type is being opened in palladium chemistry; vinylpalladium halides, ...