pentadienyl group in terms of atom- and step-economy. The development of catalytic asymmetric versions has been frequently pursued and most of the successes have been achieved with enolizable aldehydes. We herein describe a synergistic chiral primary amine/Pd catalysis for asymmetric α-pentadienylation of β-ketocarbonyls and aldehydes with skipped enynes or cyclopropropylacetylenes. The reaction features the
就原子经济性和步骤经济性而言,用跳过的烯炔或环丙丙基
乙炔直接烷基化代表了安装
戊二烯基的理想方法。人们经常追求催化不对称形式的开发,并且大部分成功都是通过烯醇化醛实现的。我们在此描述了用于β-酮羰基和醛与跳过的烯炔或环丙丙基
乙炔的不对称α-
戊二烯基化的协同手性
伯胺/Pd催化。该反应构建了无环全碳四元中心,具有高对映选择性、良好的官能团耐受性和可扩展性。