An efficient catalytic enantioselective fluorination of β-ketophosphonates using chiral palladium complexes
作者:Yoshitaka Hamashima、Toshiaki Suzuki、Yuta Shimura、Tadashi Shimizu、Natsuko Umebayashi、Toshihiro Tamura、Naoki Sasamoto、Mikiko Sodeoka
DOI:10.1016/j.tetlet.2005.01.018
日期:2005.2
succeeded in developing an efficient catalytic enantioselective fluorination of β-ketophosphonates. In the presence of chiral Pd complexes 1 (1–10 mol %), various substrates including cyclic and acyclic β-ketophosphonates underwent the reaction with N-fluorobenzenesulfonimide (NFSI) in EtOH to give the corresponding fluorinated products in a highly enantioselective manner (94–98% ee).
根据我们的Pd烯醇化物化学,我们已经成功开发了一种高效的β-酮膦酸酯催化对映选择性氟化方法。在手性Pd配合物1(1-10 mol%)的存在下,包括环和非环β-酮膦酸酯在内的各种底物与N-氟苯磺酰亚胺(NFSI)在EtOH中反应,以高度对映选择性的方式得到相应的氟化产物(94 –98%ee)。