Selective Functionalization of a Single Methylene Bridge of a Calix[6]arene
作者:Norbert Itzhak、Silvio E. Biali
DOI:10.1021/jo1005476
日期:2010.5.21
The monohydroxycalix[6]arene derivative 4a was prepared via photochemical bromination of hexamethoxycalix[6]arene 3a in aq THF. Monohydroxycalix[6]arene 4a and its chloro derivative 5 are useful synthetic intermediates for the preparation of structurally diverse calix[6]arenes functionalized at a single methylene bridge.
Preparation of Calix[8]arene Derivatives Functionalized at a Single Methylene Bridge
作者:Norbert Itzhak、Katerina Kogan、Silvio E. Biali
DOI:10.1002/ejoc.201100779
日期:2011.11
A calix[8]arene derivative substituted at the single methylene bridge by a chlorine atom reacts at the substituted bridge with O, N, and C nucleophiles under SN1 conditions. Thiscalix[8]arene can serve as a useful starting material for the preparation of calix[8]arene derivatives functionalized at a single methylene bridge.
在 SN1 条件下,在单个亚甲基桥上被氯原子取代的杯 [8] 芳烃衍生物在取代的桥上与 O、N 和 C 亲核试剂反应。该杯[8]芳烃可用作制备在单个亚甲基桥上官能化的杯[8]芳烃衍生物的有用起始材料。