asymmetrically established from racemic one-carbon central chirality efficiently at room temperature: we report here the discovery of the first catalytic asymmetric carbonylation of readily available racemic propargylic carbonates to access optically active 2,3-allenoates with fairly high ee. The combination of [(π-allyl)PdCl]2 with [(R)-ECNU-Phos], a new chiral bisphosphine ligand based on a biphenyl skeleton
                                    在室温下有效地从外消旋单碳中心手性不对称地建立了三碳轴向手性:我们在这里报告发现了容易获得的外消旋炔丙
碳酸酯的第一个催化不对称羰基化,以获取具有相当高的光学活性 2,3-烯
丙酸酯ee。[(π-烯丙基)PdCl]2 与 [(R)-
ECNU-Phos](一种基于
联苯骨架的新型手性双
膦配体)的组合显示出高对映选择性。通过应用 (R)- 或 (S)-
ECNU-Phos,可以在室温下获得烯
丙酸酯的两种对映异构体。