Tetrahedron

Synthesis and structural, spectroscopic, and electrochemical characterization of benzo [c] quinolizinium and its 5-aza-, 6-aza, and 5, 6-diaza analogues

A Jankowiak, E Obijalska, P Kaszynski, A Pieczonka…

Index: Jankowiak, Aleksandra; Obijalska, Emilia; Kaszynski, Piotr; Pieczonka, Adam; Young Jr., Victor G. Tetrahedron, 2011 , vol. 67, # 19 p. 3317 - 3327

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Citation Number: 6

Abstract

Abstract Four heterocyclic salts 1a–d were prepared by Ca 2+-assisted cyclization of fluoro derivatives 3, and investigated by spectroscopic (NMR and UV), electrochemical, and computational (DFT and MP2) methods. The mechanism for the formation of the cations was investigated at the DFT level of theory. 2-D NMR spectroscopy for 1 [ClO 4] in DMSOd 6 aided with DFT results permitted the assignment of 1 H and 13 C NMR signals in cations 1 ...