M. Hatanaka, Y. Himeda, Ueda Ikuo
1991
Citations
0
Influential Citations
10
Citations
Journal
Tetrahedron Letters
Abstract
Abstract Allylidene triphenylphosphorane 3 reacted with α-haloketones and α-halothioesters to give 2-ethoxycyclopentadienes via a [3+2] annulation process in the presence of base. Mild acid treatment of the 2-ethoxycyclopentadienes provided a new route to cyclopentenones.