Asymmetric catalysis is a challenge for chemists: How can we design catalysts to achieve
the goal of forming optically active compounds? This review provides the reader with an …

Contents 1. α-PEA as chiral auxiliary 2441 1.1. Chiral imines (1, 3-stereoinduction) 2442 1.2.
Chiral N-phenylethyl enamines (1, 4-stereoinduction) 2456 1.3. Diastereoselective …

Asymmetric hetero Diels-Alder reactions provide a multitude of opportunities for the highly
efficient regio-and stereoselective construction of various heterocycles in enantiomerically …

Die asymmetrische Katalyse ist für Chemiker eine Herausforderung: Wie kann man
Katalysatoren für die Synthese optisch aktiver Verbindungen entwickeln? Dieser Aufsatz …

In comparison to all carbon [4+ 2] cycloadditions, Diesl‐Alder reactions are still in their
infancy. The last four decades, however, have seen intensive research in this area. The …

This review highlights the state of the art of the use of iminium ions as dienophiles in Aza‐
Diels–Alder (ADA) cycloadditions. An historical survey spanning the very first discovery of …

Aqueous aza Diels− Alder reactions of chiral aldehydes, prepared from carbohydrates, with
benzylamine hydrochloride and cyclopentadiene, were promoted by lanthanide triflates. The …

A simple approach to a series of 2, 4a, 7, 7a-tetrahydro-1H-cyclopenta [c] pyridines was
proposed on the basis of the amino-Claisen rearrangement of readily accessible 2 …

Arylsulfonyl‐2‐azabicyclo [2.2. 1] hept‐5‐enes, synthesized via the cycloaddition of chloral‐
or dichloro (phenyl) acetaldehyde N‐arylsulfonylimines to cyclopentadiene, undergo …

A novel and simple synthesis of 1-azabicyclo [3.1. 0] hexane-3-ene derivatives is described.
The synthesis is carried out via a simple three-component reaction between aryl aldehydes …