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Start Over Author "Tricarico, Giovanni" Topic amino acids
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1. Selective O-functionalization of phenolic α-amino acids with crown ethers bearing cyclophosphazene sub-units

Author

Penso, Michele, Maia, Angelamaria, Lupi, Vittoria, and Tricarico, Giovanni

Subjects
*AMINO acids, *CROWN ethers, *CYCLOPHOSPHAZENES, *NUCLEOPHILIC reactions, *LIQUID membranes, *ESTERS, *CHLORINE, *PHENOLS
Abstract

Abstract: Cyclophosphazenes (CyP) containing a crown ether and an α-amino acid unit have been prepared starting from diphosphaza[16]crown-6 (PNP16C6). Nucleophilic substitution of one (or both) residual ansa-chlorine atom(s) of bis-spiro substituted PNP16C6 by α-arylsulfonamido esters containing a phenolic function leads to the target compounds. These new polyfunctionalized CyP are lariat ethers, potentially useful as starting materials for the preparation of ‘pH-controlled active ion carriers’ in liquid membranes. [Copyright &y& Elsevier]

Published
2011
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