Synthesis of (+)- and (-)-Geissman-Waiss lactone from chiral sulfonium salts
Tetrahedron Letters（2020）
Abstract
•Regiospecific 5-exo-trig-ring-closure of chiral sulfonium salts.•Desulfurization–reduction–lactonization of Cyclic zwitterionic pyrrolidinone.•Concise synthetic route to bicyclic Geissman-Waiss lactone.
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Key words
Cyclic zwitterion,Pyrrolidinone,Enantiospecific,Geissman-Waiss lactone
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