25,26-Dialkoxycalix[4]arenes. Part 2: 1-Alkoxy-3-benzoyloxy route
作者:Cheng-Han Kuo、Jun-Ren Huang、Hui-Ru Chen、Pei-Yu Chen、Chien-Hung Lin、Lee-Gin Lin
DOI:10.1016/j.tet.2011.03.048
日期:2011.5
Benzoylation of calix[4]arene monoalkyl ethers with benzoyl chloride yielded the corresponding 3-benzoates and/or 2,3-dibenzoates in different reaction conditions. A simple recrystallization process was able to isolate the 3-benzoates in good yield. In the presence of NaH as reaction base, the 1-alkoxy-3-benzoyloxycalixarenes were alkylated with active alkyl halides at proximal position and yielded the corresponding