Abstract
Abstractβ‐Aryl/alkyl vinyl diazoacetates were investigated in metallo‐vinylcarbene reactions with nitrones, revealing a Rh2(OAc)4‐catalyzed cyclopropene dimerization reaction and a copper(I) catalyzed [3+3]‐cycloaddition of nitrones. The chiral cyclopropyl‐In‐SaBox ligand with copper(I) catalysis could realize the asymmetric version of the cycloaddition reaction, delivering various 3,6‐dihydro‐1,2‐oxazine derivatives in good yield and with excellent enantioselectivity under mild conditions.
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