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Updated: Jul 30, 2025
Facile Preparation of 2Z,4E-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
Dibenzoacridines: synthesis by alkyne-carbonyl-metathesis and properties
Erich Ammon1, Paul Heine1, Miguel Andre Argüello Cordero2
1Universität Rostock, Institut für Chemie, A.-Einstein-Str. 3a, 18059 Rostock, Germany. peter.langer@uni-rostock.de.
Abstract:
Dibenzo[a,j]acridines and regioisomeric dibenzo[c,h]acridines were synthesized from a common starting material, 2,3,5,6-tetrachloropyridine, by combination of site-selective cross-coupling reaction followed by ring-closing alkyne-carbonyl metathesis using simple Brønsted acids. The two regioisomeric series were accessed by change of the order of Sonogashira and Suzuki-Miyaura reactions. The optical properties of the products were studied by steady-state absorption spectroscopy and time-resolved emission measurements. The electronic properties of the products were further elucidated by DFT calculations.
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