ChemInform Abstract: Sequential Cyclization/Silylation of Enynes Catalyzed by an Organoyttrium Complex.

✍ Scribed by G. A. MOLANDER; W. H. RETSCH

• Publisher: John Wiley and Sons
• Year: 2010
• Weight: 31 KB
• Volume: 29
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.199801044

✦ Synopsis

Sequential Cyclization/Silylation of Enynes Catalyzed by an Organoyttrium Complex.

-In the title reaction affording silylated carbocycles the diastereoselectivity can be enhanced by increasing the size of allylic substituents on the substrate. With an appropriate silane, a 1,7 enyne can also be cyclized to provide a six-membered ring product selectively.