A new member of the calix[4]crown family:Facile synthesis and characterization of a calix[4]crown-9

• 出 处: Chinese Chemical Letters
• 发表日期: 2009年02期
• 关键词: calix intramolecular crown cyclization equiv readily conformation moiety derivat

25,27-Dipropoxy-p-tert-butylcalix[4]crown-9 cone conformer 5 was readily synthesized via an intramolecular cyclization strategy in good yields.The structures of all the new compounds involved were confirmed by NMR,ESI-MS and elemental analyses.All of them were proved to be in the cone conformation.

25,27-Dipropoxy-p-tert-butylcalix [4] crown-9 cone conformer 5 was accomplished incorporated via intramolecular cyclization strategy in good yields.The structures of all the new compounds were confirmed by NMR, ESI-MS and elemental analyses.All of them were proved to be in the cone conformation.