Abstract
A simple method for selective acylation of protected and unprotected hydroxylamines with bis- and tetrakis-substituted p-tert- butylcalix[4]arene-acids through amide bond formation via mixed anhydrides is presented. The first crystal structure of calix-hydroxamate 1 is presented.
Key words
calix[4]arene-hydroxamates - calix[4]arene-amides - synthesis - mixed anhydride method
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