Design of Chiral Bifunctional Dialkyl Sulfide Catalysts for Regio‐, Diastereo‐, and Enantioselective Bromolactonization
作者:Ryuichi Nishiyori、Ayano Tsuchihashi、Ayaka Mochizuki、Kazuma Kaneko、Masahiro Yamanaka、Seiji Shirakawa
DOI:10.1002/chem.201803703
日期:2018.11.13
effective chiral dialkyl sulfide organocatalysts remain relatively rare and under‐developed, despite the potential utility of dialkyl sulfide catalysts. Herein, we report the development of chiral bifunctional dialkyl sulfide catalysts possessing a urea moiety for regio‐, diastereo‐, and enantioselective bromolactonization. The importance of the bifunctional design of chiral sulfide catalysts was clearly
尽管已经开发出多种用于不对称转化的手性有机催化剂,但是尽管有潜在的实用性,但有效的手性二烷基硫醚有机催化剂仍然相对较少且开发不足。本文中,我们报道了具有脲部分的手性双官能二烷基硫醚催化剂的开发,该脲部分用于区域,非对映和对映选择性溴内酯化。手性硫化物催化剂的双功能设计的重要性在本工作中得到了明确证明。根据实验和理论研究的结果,阐明了催化剂的硫化物和脲部分的作用。