Lewis Acid Catalyzed Alkylations of CC-Multiple Bonds; Rules for Selective Enlargements of Carbon Skeletons


  • Dr. Herbert Mayr

    Corresponding author
    1. Institut für Organische Chemie der Universität Erlangen-Nürnberg, Henkestrasse 42, D-8520 Erlangen (Germany)
    • Institut für Organische Chemie der Universität Erlangen-Nürnberg Henkestrasse 42, D-8520 Erlangen (Germany)
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  • This work was supported by the Deutsche Forschungsgemeinschaft.


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A preconception or many organic chemists, that cationic CC couplings are difficulty controllable and frequently lead to oligo- and polymeric products, would appear no longer to hold. If a difficultly ionizable product BX is formed from a readily ionizable educt AX in an electrophilic alkylation, then good yields can be achieved.