Lower-Rim-Substituted tert-Butylcalix[4]arenes; Part IX: One-Pot Synthesis of Calix[4]arene-Hydroxamates and Calix[4]arene-Amides

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.

calix[4]arene-hydroxamates - calix[4]arene-amides - synthesis - mixed anhydride method

References

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Crystallographic data for the structure of 1 reported in this paper have been deposited with Cambridge Crystallographic Data Centre as supplementary publication No. CCDC-275710 (fwd). Copies of the data can be obtained free of charge on application to CCDC, 12, Union Road, Cambridge, UK (E-mail: [e-mail]).