Chemo‐, Regio‐ and Stereoselective Preparation of (Z)‐2‐Butene‐1,4‐Diol Monoesters via Pd‐Catalyzed Decarboxylative Acyloxylation
Long Cheng,
Jia‐Li Zhao,
Xiao‐Tian Zhang
et al.
Abstract:(Z)‐alkenes are useful synthons but thermodynamically less stable than their (E)‐isomers and typically more difficult to prepare. The synthesis of 1,4‐hetero‐bifunctionalized (Z)‐alkenes is particularly challenging due to the inherent regio‐ and stereoselectivity issues. Herein we demonstrate a general, chemoselective and direct synthesis of (Z)‐2‐butene‐1,4‐diol monoesters. The protocol operates within a Pd‐catalyzed decarboxylative acyloxylation regime involving vinyl ethylene carbonates (VECs) and various c… Show more
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