226547-08-6Relevant academic research and scientific papers
Synthesis and reactions of calix[4]arene bisanhydrides
Sharma,Gutsche
, p. 3507 - 3512 (1999)
The tetrabenzyl ether, tetra-p-bromobenzenesulfonate, and tetra-p- methylbenzenesulfonate of p-carboxymethylcalix[4]arene in the 1,3-alternate conformation have been converted to the corresponding bisanhydrides. Reactions of the bisanhydrides with alcohols or amines afford calix[4]arenes carrying two carboxymethyl and two carboalkoxymethyl or two amidomethyl groups on the upper rim positions. The substitution pattern that is established confers molecular chirality on the calixarenes.
