Fig. 1: Typical compounds containing chiral tertiary alcohols, the background for transition metal-catalyzed addition of ketones with organoborons, Petasis reaction and our design.

a Typical natural product and drug containing chiral tertiary alcohols. b Transition metal-catalyzed asymmetric alkenylation or arylation of ketones with organoborons (inner-sphere mechanism). c Petasis reaction. d Our design: asymmetric addition to ketones via a 1,5-metalate shift strategy (outer-sphere mechanism).