Abstract
The orthoamide derivative of phenylpropiolic acid reacts with tertiary CH-acidic compounds as alkylmalonic acid dialkylesters under formation of 1,1-diamino-allenes wich rearrange to give 2-alkoxycarbonyl-1,1-diamino-1,3-butadienes by migration of an alkoxycarbonyl group. Perchloric acid transforms these butadienes to amidinium perchlorates. The crystal structure of an amidinium perchlorate derived from cinnamic acid has been determined.
Funding source: MWK Baden-Württemberg
Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: MWK Baden-Württemberg
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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