ChemInform Abstract: MAO-Catalyzed Allylzirconation of 1-Alkynes.

✍ Scribed by S. YAMANOI; T. IMAI; T. MATSUMOTO; K. SUZUKI

• Publisher: John Wiley and Sons
• Year: 2010
• Weight: 29 KB
• Volume: 28
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.199732051

✦ Synopsis

MAO-Catalyzed Allylzirconation of 1-Alkynes.

-Hydrozirconation of the allene (I) followed by Et3Al catalyzed reaction with ethynylbenzene is found to result in selective formation of the heptadiene (III). However, using methoxyaluminoxane (MOA) as catalyst gives a remarkably enhanced regioselectivity for (III). Further application of the MOA-catalysis to various substrate combinations leads to similar results. -(YAMANOI, S.; IMAI, T.;