Volume 55, Issue 52 pp. 16153-16155
Communication

Combining Organocatalysis and Lanthanide Catalysis: A Sequential One-Pot Quadruple Reaction Sequence/Hetero-Diels–Alder Asymmetric Synthesis of Functionalized Tricycles

Dr. Simon Dochain

Dr. Simon Dochain

Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany

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M. Sc. Fabrizio Vetica

M. Sc. Fabrizio Vetica

Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany

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Dr. Rakesh Puttreddy

Dr. Rakesh Puttreddy

Department of Chemistry, Nanoscience Center, University of Jyvaskyla, 40014 JYU Finland

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Prof. Dr. Kari Rissanen

Prof. Dr. Kari Rissanen

Department of Chemistry, Nanoscience Center, University of Jyvaskyla, 40014 JYU Finland

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Prof. Dr. Dieter Enders

Corresponding Author

Prof. Dr. Dieter Enders

Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany

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First published: 23 November 2016
Citations: 33

Graphical Abstract

Targeting complexity: A unique combination of organocatalysis with lanthanide catalysis directly leads to complex tricyclic structures from readily available and simple compounds. Six new bonds and six stereocenters are formed with virtually complete stereoselectivity in this multicomponent one-pot procedure. fod=2,2-dimethyl-6,6,7,7,8,8,8-heptafluorooctane-3,5-dionato.

Abstract

A stereoselective one-pot synthesis of functionalized complex tricyclic polyethers has been achieved using the combination of secondary amine and lanthanide catalysis. This one-pot quadruple reaction/Hetero-Diels–Alder sequence gave good yields (per step) as well as excellent diastereo- and enantioselectivities. Furthermore, the particular combination of lanthanide complexes with organocatalysis is one of the first examples described for sequential catalysis.

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