Abstract
α-Cyanoesters or tertiary α-cyanoamides react with Grignard reagents and Ti(i-PrO) 4 to afford respectively β-amino esters or amides, bearing a cyclopropane ring. Starting from β- or γ-cyanoesters, spirocyclopropanelactams are formed via an in situ cyclopropanation-lactamization sequence.
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