Enantioselective Synthesis of Chiral Indane Derivatives by Rhodium-Catalyzed Addition of Arylboron Reagents to Substituted Indenes
作者:Moeko Umeda、Hikaru Noguchi、Takahiro Nishimura
DOI:10.1021/acs.orglett.0c03651
日期:2020.12.18
asymmetric addition of arylboron reagents to indene derivatives proceeded to give 2-arylindanes in good yields with high enantioselectivity. Deuterium-labeling experiments indicated that the present reaction involved a 1,4-Rh shift from an initially formed benzylrhodium to an arylrhodium intermediate before protonation leading to the corresponding addition product. The asymmetric addition was also successful
铑催化的不对称加成芳基硼试剂到茚衍生物上,以高收率和高对映体选择性得到2-芳基茚满。氘标记实验表明,本反应涉及质子化之前从最初形成的苄基铑到芳基铑中间体的1,4-Rh转移,从而导致相应的加成产物。不对称加成也成功地用于了successful烯,,烯具有类似于茚的骨架,在found烯中发现苄基铑中间体进行了直接质子化而没有1,4-Rh移位。