1999 alkylation, arylation, dealkylation, dearylation, C-acylation, olefination

alkylation, arylation, dealkylation, dearylation, C-acylation, olefinationO 0280

23 - 0793-Trifloxypropene Iminium and Propyne Iminium Salts Derivedfrom N-Allyl-, N-Homoallyl-, and N-Benzyl-Substituted SemicyclicEnaminones. — Reaction of novel semicyclic enaminoketones (III) withtriflic anhydride gives 3-trifloxypropene iminium triflates [cf. (V)] which undergoimmediately or upon heating a β-elimination to furnish semicyclic propyneiminium triflates [cf. (VI), (VII)]. — (NEUMANN, R.; HERZ, H. G.; MAAS,G.; J. Prakt. Chem. 341 (1999) 2, 121-127; Abt. Org. Chem., Univ. Ulm,D-89081 Ulm, Germany; EN)

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