摘要:
Two pyrazine-containing macrocyclic polyazomethines 2 and 3 were synthesized by direct [2 + 2] and [3 + 3] condensation reactions between 2,2'-[pyrazine-2,3-diylbis(oxy)]dibenzaldehyde (1) and hydrazine. Both 2 and 3 were characterized by NMR, HRMS, and their structures were determined via X-ray crystal diffraction studies. (C) 2010 Ke Wen. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.