Gold(I)/Chiral Brønsted Acid Catalyzed Enantioselective Hydroamination-Hydroarylation of Alkynes: The Effect of a Remote Hydroxyl Group on the Reactivity and Enantioselectivity
作者:Valmik S. Shinde、Manoj V. Mane、Kumar Vanka、Arijit Mallick、Nitin T. Patil
DOI:10.1002/chem.201405061
日期:2015.1.12
range of pyrrole‐based aromatic amines to give pyrrole‐embedded aza‐heterocyclic scaffolds bearing a quaternary carbon center. The presence of a hydroxyl group in the alkyne tether turned out to be very crucial for obtaining products in high yields and enantioselectivities. The mechanism of enantioinduction was established by carefully performing experimental and computational studies.
(R 3 P)AuMe /(S)-3,3'-双(2,4,6-三异丙基苯基)-1,1'-联萘-2,2'催化下炔烃的对映选择性加氢氨化反应报道了磷酸二氢基酯((S)-TRIP)。炔烃与一系列基于吡咯的芳族胺反应,生成带有季碳中心的吡咯嵌入的氮杂杂环骨架。事实证明,炔烃系链中羟基的存在对于获得高产率和对映选择性的产物非常关键。通过仔细地进行实验和计算研究来建立对映体诱导的机制。