Regio- and Enantioselective Linear Cross-Dimerizations between Conjugated Dienes and Acrylates Catalyzed by New Ru(0) Complexes
作者:Yuki Hiroi、Nobuyuki Komine、Sanshiro Komiya、Masafumi Hirano
DOI:10.1021/om500927z
日期:2014.11.24
New naphthalene complexes of Ru(0) with various Ru(η6-naphthalene)(cyclic diene) (3) ligands catalyze linear cross-dimerization between conjugated dienes and acrylates. One of the noteworthy catalysts is the dibenzocyclooctatetraene complex 3d, which shows high catalytic activity for the cross-dimerization between 1,3-pentadiene and methyl acrylate to give the cross-dimers in 99% yield (branch/linear
钌(0)与各种钌(η的新萘配合物6 -萘)(环状二烯)(3)配位体催化线性共轭二烯和丙烯酸酯之间的交叉二聚化。值得注意的催化剂之一是二苯并环辛酸酯络合物3d,它对1,3-戊二烯和丙烯酸甲酯之间的交叉二聚反应显示出很高的催化活性,以99%的收率(支链/线性= 77/23)提供了交叉二聚体。在50°C下1 h,催化剂负载量为1 mol%。当茹(η 6 -萘)[( - ) - PH-BOD *](3F)用作催化剂时,处理2,4-二甲基己-2,4-二烯用的叔丙烯酸丁酯以44%的收率和49%的ee产生手性交联二聚体。这是共轭二烯和取代烯烃之间对映选择性交叉二聚的第一个例子。