Affiliation:
1. State Key Laboratory of Natural Medicines (SKLNM) Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University Nanjing 210009 P. R. China
Abstract
AbstractBicyclo[3.2.1]octadiene compounds and derivatives exist in a number of natural products and bioactive compounds. Nevertheless, catalytic enantioselective protocols for the synthesis of these skeletons have not been disclosed. Herein we reported a palladium‐catalyzed asymmetric intramolecular alkene‐alkyne coupling of alkyne‐tethered cyclopentenes, affording a library of enantionenriched bicyclo[3.2.1]octadienes in excellent yields and enantioselectivities (mostly >99 % ee). Moreover, the products could undergo an unusual iodination‐induced 1,2‐acyl migration, forming iodinated bicyclo[3.2.1]octadienes with three vicinal stereocenters. The enone and isolated olefin motifs embedded in the products provide useful handles for downstream elaboration.
Subject
General Chemistry,Catalysis