
Dedicated to the memory of my parents, Andrew and Bernadine Harmata
Abstract
This account describes how I began my adventure in the area of (4+3)-cycloadditions and then focuses on two ongoing projects: a new catalytic asymmetric (4+3)-cycloaddition and what might be described as the ‘rebirth’ of oxidopyridinium ion (4+3)-cycloaddition chemistry. References to other people’s work are made where appropriate.
1 Introduction
2 Asymmetric, Catalytic (4+3)-Cycloadditions
3 Oxidopyridinium Ions and (4+3)-Cycloadditions
4 Conclusions and the Future
Key words
(4+3)-cycloadditions - sulfones - organocatalysis - oxidopyridinium ions - allylic cations - dienes - asymmetric catalysis