Dedicated to Prof. Dr. Dr. h.c. Lutz F. Tietze, the inventor of ‘domino reactions’.
Abstract
This is a personal account on how to create domino reactions consisting of catalyzed
or uncatalyzed alkyne activation, cyclization, and subsequent rearrangement by a
[1,2]-shift. In the context of literature reports on breakthrough works, we discuss
our motivation, challenges, and success stories. The title reactions were developed
with the goal of rapidly evolving molecular complexity in an experimentally easy manner.
The value of the reactions in controlled syntheses of various carbocyclic and heterocyclic
scaffolds through changing the nature of the substrate and the exact reaction conditions
is demonstrated.
1 Introduction
2 Carbocyclizations
2.1 6-Endo Cyclization
2.2 6-Exo Cyclization
3 Heterocyclizations
4 Miscellaneous Reactions
5 Conclusions
Key words domino reactions - rearrangements - catalysis - heterocycles - carbocycles