作者:Li, Jun、Wang, Yu、Wang, Yan、Zhai, Lianjie、Huang, Junrong、Song, Lijuan、You, Hengzhi、Chen, Fen-Er
DOI:10.1021/acs.orglett.4c01972
日期:——
We have developed a highly regio-, diastereo-, and enantioselective Cu-catalyzed desymmetrization of inert meso-diethers using Grignard reagents. Moreover, previous inaccessible sterically hindered organometallic reagents are realized in the reaction with broad secondary alkyl Grignard reagents. Finally, detailed control experiments and density functional theory calculations revealed the desymmetrization
我们使用格氏试剂开发了一种高度区域选择性、非对映选择性和对映选择性的铜催化惰性内消旋二醚去对称化反应。此外,以前难以获得的位阻有机金属试剂是在与宽仲烷基格氏试剂的反应中实现的。最后,详细的控制实验和密度泛函理论计算表明,在不存在原位生成的烯丙基溴中间体的情况下,内消旋二醚的去对称化利用了直接的抗-S N 2'途径。接下来的氧化加成是关键的速率决定和对映选择性决定步骤。