Design and Synthesis of Chiral Diene Ligands for Rh<sup>I</sup>
-Catalyzed Enantioselective Arylation of <i>N</i>
-DPP-protected Aldimines: Synthesis of the Antifungal Agent Bifonazole
作者:Jin-Fong Syu、Huang-Ying Lin、Yu-Yi Cheng、Yao-Chu Tsai、Yi-Ching Ting、Ting-Shen Kuo、Damodar Janmanchi、Ping-Yu Wu、Julian P. Henschke、Hsyueh-Liang Wu
DOI:10.1002/chem.201702509
日期:2017.10.17
carboxylic ester groups, or only with aryl groups, the addition reaction proceeded with high stereoselectivity. The protocol tolerated a range of N‐DPP‐aldimines and arylboronic acids, producing the desired optically active N‐DPP‐protected amines with yields between 31–99 % and with ee values up to 91–99 %. The synthetic utility of the method was demonstrated by the conversion of N‐DPP‐protected amine 3 ae into
在本文中,我们描述了新型的双官能团,带有芳基和仲酰胺基的手性双环[2.2.1]庚二烯配体的设计和合成,并证明了它们在Rh I催化的芳基硼酸与N-二苯基膦基的对映选择性加成反应中的用途。(N -DPP)保护的亚胺。与包含被芳基和羧酸酯基团或仅被芳基取代的二烯配体的类似Rh I催化剂不同,加成反应以高立体选择性进行。该方案可耐受N -DPP-亚胺和芳基硼酸,产生所需的旋光性N‐DPP保护的胺,收率在31–99%之间,并且ee值高达91–99%。该方法的合成效用通过将N ‐DPP保护的胺3 ae转化为抗真菌剂联苯苄唑(13)得以证明。