A Rh(I)‐Catalyzed Cascade Cyclization of 1,5‐Bisallenes and Alkynes for the Formation of
<i>cis‐</i>
3,4‐Arylvinyl Pyrrolidines and Cyclopentanes
作者:Jordi Vila、Roger Vinardell、Miquel Solà、Anna Pla‐Quintana、Anna Roglans
DOI:10.1002/adsc.202100934
日期:2022.1.4
The cascade cyclization reactions of 1,5-bisallenes grant access to a great variety of products by precisely tuning the catalyst system and/or the reagents involved. Herein, we present our findings that 1,5-bisallenes react with two molecules of dimethyl acetylenedicarboxylate to afford, in a completely diastereoselective manner, cis-3,4-arylvinyl pyrrolidines and cyclopentanes. DFT calculations have
通过精确调整催化剂系统和/或所涉及的试剂,1,5-双丙二烯的级联环化反应可以获得多种产品。在此,我们展示了我们的发现,即 1,5-双丙二烯与两个分子的乙炔二羧酸二甲酯反应,以完全非对映选择性的方式提供顺式-3,4-芳基乙烯基吡咯烷和环戊烷。DFT 计算已被用于假设已开发反应的机制,该反应包括两个炔烃和一个丙二烯的外部双键的 [2+2+2] 环加成反应,然后是涉及第二个炔烃的内部双键的环异构化艾伦。