Highly efficient Rh(I)/tris-binaphthyl monophosphite catalysts for hydroformylation of sterically hindered alkyl olefins
作者:Gonçalo N. Costa、Rui M.B. Carrilho、Lucas D. Dias、Júlio C. Viana、Gilberto L.B. Aquino、Marta Pineiro、Mariette M. Pereira
DOI:10.1016/j.molcata.2016.02.016
日期:2016.5
Abstract The hydroformylation of highly substituted alkyl olefins was efficiently performed, with use of rhodium(I)/tris-binaphthyl monophosphite catalysts, containing different ether substituents at the 2′-binaphthyl position (OMe, OBn, OCHPh 2 and OAdamantyl). A systematic kinetic study, carried out for hydroformylation of methyl non-3-enoate, has shown a significant influence of the ligand’s OR group
摘要 使用在 2'-联萘位置(OMe、OBn、OCHPh 2 和 OAdamantyl)含有不同醚取代基的铑 (I)/三联萘单亚磷酸酯催化剂有效地进行了高度取代的烷基烯烃的加氢甲酰化。对非 3-烯酸甲酯的加氢甲酰化进行的系统动力学研究表明,配体的 OR 基团对铑催化剂的性能有显着影响,Rh(I)/tris[2'-benzyloxy-1, 1'-联萘-2-基]亚磷酸酯催化体系 (Rh(I)/ L2 -OBn) 对醛类化合物具有最高的化学选择性,对 C-5 甲酰基产物具有最高的区域选择性。该催化体系进一步应用于天然产物的负载CC双键的加氢甲酰化,即油酸甲酯、(-)-异胡薄荷醇苄基醚和17β-acetoxyandrost-4-ene,