New Approach to the Synthesis of Azinylcymantrenes
摘要:
A versatile synthetic protocol was proposed for direct C-C coupling of a cymantrene fragment with various azaheterocycles on the basis of nucleophilic substitution of hydrogen in the absence of metal catalysts.
Transition metal-free regioselective cross-coupling of azine N-oxides with cymantrenyl lithium
作者:Alexandra A. Musikhina、Irina A. Utepova、Oleg N. Chupakhin、Valery N. Charushin、Pavel A. Slepukhin
DOI:10.1016/j.jorganchem.2018.06.008
日期:2018.9
The facile CC coupling reaction of activated forms of azaaromatics (azine-N-oxides) with cymantrenyl lithium, as a nucleophile, has first been carried out. It has been established that aromatization of intermediate adducts can be realized through either oxidative or eliminative pathways, depending on the structure of the starting azine N-oxide. In particular, the dihydroazinyl intermediates, bearing