Abstract
Recent work on synthetic applications of bicyclic alkenes
is reviewed, including synthesis of substituted bicyclic alkenes,
1,3-dipolar cycloadditions, ruthenium-catalyzed [2+2] cycloadditions,
ruthenium-catalyzed cyclizations and isomerizations, rhodium-catalyzed
dimerizations, ruthenium- and rhodium-catalyzed ring-opening reactions.
1 Introduction
2 Synthesis of Substituted Norbornadienes and Norbornenes
2.1 Synthesis of 2- and 2,3-Disubstituted Norbornadienes by Double
Lithium-Halide Exchange
2.2 Synthesis of Norbornadiene-2,3-diynes by Palladium-Catalyzed
Sonogashira Coupling Reactions
2.3 Synthesis of 2,3-Diarylnorbornadienes by Palladium-Catalyzed
Suzuki Coupling Reactions
2.4 Synthesis of Substituted Bicyclic Alkenes by Iron-Catalyzed
Coupling Reactions
3 1,3-Dipolar Cycloadditions of Bicyclic Alkenes
3.1 Intramolecular 1,3-Dipolar Cycloadditions of Norbornadiene-Tethered
Nitrile Oxides
3.2 Intramolecular 1,3-Dipolar Cycloadditions of Norbornadiene-Tethered
Nitrones
4 Ruthenium-Catalyzed [2+2] Cycloadditions
of Bicyclic Alkenes
4.1 Reactivity of the Alkene and the Alkyne Components
4.2 Heteroatom-Substituted Alkynes
4.3 Regioselectivities
4.4 Asymmetric Induction Studies
5 Ruthenium- and Rhodium-Catalyzed Reactions of Heterobicyclic
Alkenes
5.1 Ruthenium-Catalyzed Cyclization Reactions of Oxabenzonorbornenes
with Propargylic Alcohols
5.2 Ruthenium- and Rhodium-Catalyzed Isomerizations and Dimerizations
of Oxabenzonorbornenes
5.3 Ruthenium- and Rhodium-Catalyzed Ring-Opening Reactions
of 3-Aza-2-oxabicyclo[2.2.1]hept-5-enes
6 Conclusions
Key words
cycloaddition - ring opening - ruthenium - rhodium - bicyclic alkenes