Beilstein J. Org. Chem.2020,16, 2338–2345, doi:10.3762/bjoc.16.195
on the results of the stoichiometric reaction, a secondary amine-catalyzed nitro-Michael reaction is performed as well which afforded reasonable diastereoselectivities.
Keywords: Diels–Alder reaction; enamine catalysis; hierarchicalhelicates; remote-control; stereoselectivity; Introduction
Carbon
off the stereoselectivity [13].
Herein we investigated the induction pathway and significantly optimized the stereoselectivity of the reaction. Furthermore, a catalytic approach was introduced which paves the way to the final goal of supramolecular stereoselective catalysis with hierarchicalhelicates
formed helicates with mixtures of ligands as platforms to control the stereochemistry of C–C bond-forming reactions. However, it would be of great advantage to transfer the findings to catalytic C–C bond-forming reactions which are catalyzed by hierarchicalhelicates containing chiral ligands for
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Graphical Abstract
Scheme 1:
Formation of hierarchically assembled lithium-bridged titanium(IV) helicates as well as the ligands...