Expeditious synthesis of benzopyrans via Lewis acid-catalyzed C-H functionalization: remarkable enhancement of reactivity by an ortho substituent.
Mori
Keiji
K
Department of Chemistry, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan.
Kawasaki
Taro
T
Sueoka
Shosaku
S
Akiyama
Takahiko
T