Inter- and Intramolecular Palladium-Catalyzed Allyl Cross-Coupling Reactions Using Allylindium Generated In Situ from Allyl Acetates, Indium, and Indium Trichloride
作者:Dong Seomoon、Kooyeon Lee、Hyunseok Kim、Phil Ho Lee
DOI:10.1002/chem.200601338
日期:2007.6.15
coupling partners in Pd-catalyzed cross-coupling reactions. A variety of allyl acetates such as but-1-en-3-yl acetate, crotyl acetate, and 2-methylallyl acetate afforded the corresponding allylic compounds in good yields in cross-coupling reactions. Various electrophilic cross-coupling partners such as aryl iodides and vinyl bromides and triflates participate in these reactions. Not only intermolecular but
在Pd(0)催化剂和nBuNMe(2)的存在下,成功地证明了使用铟和三氯化铟处理乙酸烯丙酯原位生成的烯丙基烯丙基间和分子内钯催化的烯丙基交叉偶联反应。发现通过在Pd(0)催化剂存在下从各种乙酸烯丙酯与铟和三氯化铟一起还原得到的pi-allpalladium(II)配合物进行还原性金属转移而在原位生成的Allinlindium物种能够充当有效的亲核试剂钯催化的交叉偶联反应中的偶联伙伴。在交叉偶联反应中,各种乙酸烯丙酯例如乙酸丁-1-烯-3-基酯,乙酸巴豆酯和乙酸2-甲基烯丙基酯以良好的产率提供了相应的烯丙基化合物。各种亲电交叉偶联伙伴(例如芳基碘化物和乙烯基溴化物和三氟甲磺酸酯)参与这些反应。不仅分子间的而且Pd催化的分子内的交叉偶联反应同样良好地工作,以高收率产生所需的烯丙基偶联产物。