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This document describes the selective nitration of calix[4]arene to produce mono-nitro and 1,3-dinitro derivatives. It involves: 1) Selectively benzoylating calix[4]arene with benzoyl chloride to introduce benzoyl protecting groups that deactivate the phenol rings towards nitration. 2) Nitrating the protected calix[4]arenes with nitric acid to introduce nitro groups at the para positions of unprotected phenol rings. 3) Removing the benzoyl protecting groups with sodium hydroxide to yield the mono-nitro and

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