Hydrogen Bonds-Enabled Design of a <i>C</i><sub>1</sub>-Symmetric Chiral Brønsted Acid Catalyst
作者:Norie Momiyama、Kosuke Funayama、Hirofumi Noda、Masahiro Yamanaka、Naohiko Akasaka、Shintaro Ishida、Takeaki Iwamoto、Masahiro Terada
DOI:10.1021/acscatal.5b02079
日期:2016.2.5
differentiation of the asymmetric reaction space is possible by the remote control of the pentafluorophenyl group. Furthermore, we have conducted theoretical studies to clarify the roles of both intra- and intermolecular hydrogen bonds in the C1-symmetric chiral environment of chiral bis-phosphoric acid catalysts. The developed strategy, C1-symmetric catalyst design through hydrogen bonding, is potentially applicable
我们已经开发了具有吸电子基团作为两个取代基之一的新的C 1对称的手性双磷酸。这种具有五氟苯基的C 1对称手性双磷酸在丙烯醛,甲基丙烯醛和α-卤代丙烯醛与取代的a二烯的不对称Diels-Alder反应中表现出色。通过远程控制五氟苯基,可以控制阻转异构体催化剂的结构,提高催化活性和区分不对称反应空间。此外,我们进行了理论研究,以阐明C 1中分子内和分子间氢键的作用手性双磷酸催化剂的对称手性环境。所开发的策略,即通过氢键键合的C 1-对称催化剂设计,可能适用于其他手性布朗斯台德酸催化剂的开发。