Enantioselective oxidative-coupling of polycyclic phenols
摘要:
Enantioselective oxidative-coupling of polycyclic phenols, such as 2-anthracenol, 9- or 3-phenanthrol, and 5-chrysenol was established by using vanadium(V/IV) catalysis under air or 02 as a co-oxidant. In the vanadium catalyzed reaction, the corresponding coupling products were obtained in good to excellent yields with up to 93% enantiomeric excess. (C) 2014 Elsevier Ltd. All rights reserved.
Design of primary amine-functionalized polymer containing chiral isosorbide in the main chain for the asymmetric synthesis of isoquinuclidine derivatives
作者:K. Hiba、K. Sreekumar
DOI:10.1039/d1nj05868a
日期:——
The present article is concerned with the synthesis, characterization, and application of a novel amine-functionalized optically active polymer consisting of isosorbide units attached in the mainchain. This polymer could be used as a chiral homogeneous organocatalyst for the one-pot three component asymmetric synthesis of isoquinuclidine derivatives via aza-Diels–Alder reaction. Recyclability, the