Scheme 5.

Reaction scope of the electrophilic cyanation‐Povarov cascade. Reagents, conditions: a) 9 (1.0–1.5 equiv), r.t., CH₂Cl₂, 3–36 h; b) 9 (1.5 equiv), r.t., CH₂Cl₂, 11–36 h. ^aDiasteromeric mixture (8:1 ratio); the second diasteromer only differs in the configuration of the carbon marked (*). Molecular structures of compounds 65 and 70 in the solid state. Anisotropic displacement shown at 50 % probability level. Only selected hydrogen atoms are shown.24