Synthesis and alkali metal picrate extraction capabilities of novel, cage-functionalized diazacrown ethers. Effects of host preorganization on avidity and selectivity toward alkali metal picrates in solution
摘要:
The synthesis of a series of cage-functionalized bis(monoazacrown) ethers and bis(diazacrown) ethers is described. Alkali metal picrate extraction profiles have been determined for several members of this novel series of ionophores. The increased level of preorganization achieved when a cage-functionalized bis(diaza-crown) ether is incorporated into a "molecular box" results in higher levels of avidity and selectivity of the resulting host system toward alkali metal picrates in solution. (C) 1998 Elsevier Science Ltd. All rights reserved.
Synthesis and alkali metal picrate extraction capabilities of novel, cage-functionalized diazacrown ethers. Effects of host preorganization on avidity and selectivity toward alkali metal picrates in solution
摘要:
The synthesis of a series of cage-functionalized bis(monoazacrown) ethers and bis(diazacrown) ethers is described. Alkali metal picrate extraction profiles have been determined for several members of this novel series of ionophores. The increased level of preorganization achieved when a cage-functionalized bis(diaza-crown) ether is incorporated into a "molecular box" results in higher levels of avidity and selectivity of the resulting host system toward alkali metal picrates in solution. (C) 1998 Elsevier Science Ltd. All rights reserved.