One‐Pot, Two‐Step Protocol for the Catalytic Asymmetric Synthesis of Optically Active N,O‐ and O,O‐Acetals

N,O problem: An asymmetric catalytic one-pot N,O- and O,O-acetalization cascade is presented. This strategy is based on catalytic asymmetric conjugate addition and subsequent acid-catalyzed acetal formation that allows efficient and fast construction of functionalized dioxabicyclo- and oxaazabicyclo[3.3.1]nonane structures that are important motifs in several natural products and pharmaceutically interesting compounds.