Enantioselective Ring-Opening Reaction of Epoxides with MeOH Catalyzed by Homochiral Metal–Organic Framework
作者:Koichi Tanaka、Ken-ichi Otani、Takanori Murase、Shyota Nishihote、Zofia Urbanczyk-Lipkowska
DOI:10.1246/bcsj.20110392
日期:2012.6.15
Two new copper metal–organic frameworks containing 2,2′-dihydroxy-1,1′-binaphthalene-5,5′-dicarboxylic acid (5,5′-H2BDA) and 2,2′-dihydroxy-1,1′-binaphthalene-4,4′-dicarboxylic acid (4,4′-H2BDA) have been prepared. X-ray structure determination of [Cu2(5,5′-BDA)2(H2O)2]·MeOH·2H2O (MOF-1) and [Cu2(4,4′-BDA)2(H2O)2]·4H2O (MOF-2) revealed similar 2D sheet structures, containing square-grid coordination networks, but differences in the stacking motif. The desolvated MOF-1 and -2 were used as Lewis acid catalysts in the asymmetric ring-opening reaction of epoxides with MeOH.
含有 2,2′-二羟基-1,1′-萘-5,5′-二甲酸(5、5′-H2BDA)和 2,2′-二羟基-1,1′-联萘-4,4′-二羧酸(4,4′-H2BDA)。对[Cu2(5,5′-BDA)2(H2O)2]-MeOH-2H2O(MOF-1)和[Cu2(4,4′-BDA)2(H2O)2]-4H2O(MOF-2)进行的 X 射线结构测定显示,它们具有相似的二维薄片结构,包含方格配位网络,但在堆积模式上存在差异。脱溶的 MOF-1 和 -2 被用作路易斯酸催化剂,用于环氧化物与 MeOH 的不对称开环反应。