Indium-Catalyzed Homo-Nazarov Cyclizations of Alkenyl Cyclopropyl Ketones
作者:Dadasaheb V. Patil、Lien H. Phun、Stefan France
DOI:10.1021/ol102497w
日期:2010.12.17
Herein, an efficient Lewis acid catalyzed protocol for the homo-Nazarov cyclizations of alkenyl cyclopropylketones is reported. Alkenes bearing β-hydrogens (or silyl groups) provide 1.5:1 mixtures of methylene cyclohexenols and cyclohexenones. When no β-hydrogens (or silyl groups) are present, only cyclohexenones are observed. Products are rapidly formed in good to high yields (up to 93%) under mild