Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, USA.
Org Lett. 2011 Apr 15;13(8):1904-7. doi: 10.1021/ol200059u. Epub 2011 Mar 10.
Diiron nonacarbonyl in combination with triphenylphosphine has been identified as a low-cost and environmentally benign catalyst system for the allylation of zinc enolates generated in situ from copper-catalyzed asymmetric conjugate addition reactions. The catalyst system provides the allylated product in modest to good yields at room temperature with unprecedented diastereoselectivity in cyclic enone systems. While triphenylphosphine was uniquely effective among the investigated ligands, the exact nature of the active catalytic species remains unknown.
二羰基二铁与三苯基膦形成的配合物被鉴定为一种低成本、环境友好的催化剂体系，可用于铜催化的不对称共轭加成反应原位生成的锌烯醇盐的烯丙基化反应。该催化剂体系在室温下以中等至良好的收率提供烯丙基化产物，在环状烯酮体系中具有前所未有的非对映选择性。虽然三苯基膦是在所研究的配体中唯一有效的配体，但活性催化物种的确切性质仍不清楚。
