Okachi Takahiro, Murai Norio, Onaka Makoto
Department of Chemistry, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo 153-8902, Japan.
Org Lett. 2003 Jan 9;5(1):85-7. doi: 10.1021/ol027261t.
Catalytic enantioselective epoxidation of homoallylic alcohols using Zr(Ot-Bu)(4) and tartrate ester (or tartramide) has been developed. In the Zr(Ot-Bu)(4)/diisopropyl tartrate-catalyzed epoxidation, the reverse of the enantiofacial preference was observed, depending on the Zr/ligand ratios of 1:1 or 1:2. [reaction--see text]
已经开发出使用四叔丁氧基锆(Zr(Ot-Bu)(4))和酒石酸酯(或酒石酰胺)对高烯丙醇进行催化对映选择性环氧化反应。在四叔丁氧基锆/酒石酸二异丙酯催化的环氧化反应中,根据锆/配体比例为1:1或1:2,观察到对映面选择性的反转。[反应——见正文]