Palladium-Catalyzed Carbo-Oxygenation of Propargylic Amines using in Situ Tether Formation
作者:Phillip D. G. Greenwood、Erwann Grenet、Jerome Waser
DOI:10.1002/chem.201900020
日期:2019.2.26
chiral auxiliaries, and catalysts. This work reports a new method for the palladium‐catalyzed oxyalkynylation and oxyarylation of propargylic amines. The reaction is perfectly regioselective based on the in situ introduction of a hemiacetal tether derived from trifluoroacetaldehyde. cis‐Selective carbo‐oxygenation was achieved for terminal alkynes, whereas internal alkynes gave trans‐carbo‐oxygenation products
在天然产物,药物,手性助剂和催化剂中经常发现1,2-氨基醇和α-氨基羰基。这项工作报告了钯催化炔丙基胺的氧烷基化和芳基化的新方法。基于原位引入衍生自三氟乙醛的半缩醛系链,该反应是完全区域选择性的。末端炔烃实现顺式选择性碳氧合,而内部炔烃产生反式碳氧合产物。所获得的烯醇醚可以分别通过氢化或水解轻松地转化为1,2-氨基醇或α-氨基酮。