Zirconium-catalyzed chemoselective methylalumination of ethers, amines, and sulfides bearing two terminal alkenyl groups
作者:Ryukichi Takagi、Nao Igata、Kazuhiro Yamamoto、Satoshi Kojima
DOI:10.1016/j.jorganchem.2010.12.031
日期:2011.4
Chemoselectivity in the methylalumination reaction of unsymmetrical ethers, amines, and sulfides bearing two different terminal alkenyl groups, a 13-tetradecenyl group and an allyl, 4-pentenyl or 6-heptenyl group was examined. The methylalumination of the allyl derivatives proceeded with complete chemoselectivity to afford only the 13-tetradecenyl-monomethylated products. In the methylalumination reactions
研究了带有两个不同末端烯基,13-十四碳烯基和烯丙基,4-戊烯基或6-庚烯基的不对称醚,胺和硫化物在甲基铝化反应中的化学选择性。烯丙基衍生物的甲基铝化以完全的化学选择性进行,仅得到13-十四碳烯基-单甲基化产物。在4-戊烯基和6-庚烯基衍生物的甲基铝化反应中,除了获得13-十四碳烯基-单甲基化的产物和二甲基化的产物外,还获得了。但是,与烯丙基衍生物一样,除6-庚烯基13-十四碳烯基胺以外,未观察到单甲基化为较短的4-戊烯基或6-庚烯基。