Enantioselective synthesis of spirocyclic benzopyranones by rhodium-catalyzed intermolecular [4+2] annulation.
Hojo
Daiki
D
Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan.
Noguchi
Keiichi
K
Hirano
Masao
M
Tanaka
Ken
K