Synthesis of Large Macrocyclic Azacalix[n]pyridines (n = 6 − 9) and Their Complexation with Fullerenes C60 and C70
摘要:
Large methylazacalix[n]pyridines (n = 6-9) were synthesized effectively from the Pd-catalyzed macrocyclic fragment coupling reactions between alpha,omega-dibrominated and alpha,omega-diaminated linear oligomers. As macrocyclic host molecules, they formed a 1:1 complex with fullerenes C-60 and C-70 with association constants ranging from 3 x 10(4) to 1 x 10(5) M-1.