Diamond crowns: Design, synthesis and X-ray crystallographic studies of a novel family of adamantane-containing crown ethers
摘要:
A novel family of crown ethers, containing adamantane units in the cyclic framework, has been designed and synthesized by a straightforward one-step procedure. The design strategy permits the incorporation of a variety of a-amino acids to provide adamantane-constrained chiral crown ethers for use as simple models in studying ion-transport and host-guest complexation. X-ray crystallographic studies on four members of this family have revealed interesting conformational features. Ion complexation studies of several members with alkali metal and ammonium ions are reported. (C) 1999 Elsevier Science Ltd. All rights reserved.