S–Alkyl-4-oxothianium Ions for the Synthesis of Cyclopentenones. Acid-Catalyzed Cyclization of Divinyl Ketones
作者:Haruo Matsuyama、Yuji Takei、Michio Kobayashi
DOI:10.1246/bcsj.59.2657
日期:1986.8
A new approach to 2-cyclopentenones via an acidic cyclization of divinyl ketones by the use of S–alkyl-4-oxothianium ions as key compounds is described.