Enantioselective synthesis of cyclic allylboronates by Mo-catalyzed asymmetric ring-closing metathesis (ARCM). A one-pot protocol for net catalytic enantioselective cross metathesis
作者:Jesper A. Jernelius、Richard R. Schrock、Amir H. Hoveyda
DOI:10.1016/j.tet.2004.06.017
日期:2004.8
Mo-catalyzed asymmetric ring-closing metathesis (ARCM) reactions are used to synthesize cyclic allylboronates of high optical purity (89% ee to >98% ee). A one-pot procedure involving formation of allylboronates, Mo-catalyzed ARCM and functionalization of the optically enriched cyclic allylboronates constitutes net asymmetric cross metathesis (ACM). Structural modification of ARCM products include
Mo催化的不对称闭环复分解反应(ARCM)用于合成高光学纯度(89%ee至> 98%ee)的环状烯丙基硼酸酯。一锅法涉及烯丙基硼酸酯的形成,Mo催化的ARCM和光学富集的环状烯丙基硼酸酯的功能化,构成了净不对称交叉复分解(ACM)。ARCM产品的结构改性包括与醛的反应,以提供具有出色非对映选择性的带有季碳中心的光学富集化合物。这些研究强调了手性基于钼的络合物作为一类手性复分解催化剂的重要性,这些催化剂经常在反应性和选择性方面相互补充。