[10]Paracyclophanediamides and their octadehydro derivatives: Novel exotopic receptors with hydrogen-bonding sites on the bridge
2,9-Diaza-1,10-dioxo[10]paracyclophanes were prepared in short steps from the terephthaloyl chlorides via the corresponding 4,6-diyne derivatives, and the amide groups on the bridge endow the skeleton with the guest-binding properties as demonstrated by c