Hydrogen-Bonding-Induced Planar, Rigid, and Zigzag Oligoanthranilamides. Synthesis, Characterization, and Self-Assembly of a Metallocyclophane
作者:Jiang Zhu、Xiao-Zhong Wang、Ying-Qi Chen、Xi-Kui Jiang、Xin-Zhi Chen、Zhan-Ting Li
DOI:10.1021/jo0490705
日期:2004.9.1
Four oligoanthranilamides 1-4, which are incorporated with three, five, seven, or nine benzene units, respectively, have been synthesized and characterized. X-ray analysis, 1D and 2D H-1 NMR, and IR experiments reveal that all the new oligoamides adopt rigid, planar and zigzagged conformations in both solution and solid state, which are stabilized by intramolecular three-center hydrogen bonding. A 5-mer oligomer 22, which is incorporated with two acetylene groups at the ends, has also been synthesized and utilized for the self-assembly of a rigid hydrogen-bonded metallocyclophane. The new rigid oligoanthranilamides represent useful building blocks for the construction of supramolecular architectures.