Photocatalytic Annulation-Alkynyl Migration Strategy for Multiple Functionalization of Dual Unactivated Alkenes.
ORGANIC LETTERS(2019)
Abstract
A novel photoredox catalysis for multiple functionalization of two different types of unactivated alkenes in a single operation was reported through a conceptually new mode of annulation-alkynyl migration. A wide array of cyclopentane carboxylates were synthesized in a highly selective and functional-group-compatible manner via C-centered radical induced cascade 5-exo-trig/5-exo-dig bicyclization and C-C bond cleavage process. This methodology might open a new entry for designing annulation-functional group migration to create structurally applicable cyclic ring systems.
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Key words
annulation–alkynyl migration strategy,multiple functionalization
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