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Regioselective lipase catalyzed synthesis of diester crowns. New asymmetric macrocycles containing a 1,3-bis(1H-pyrazol-1-yl)propane unit

AuthorsConde, Santiago; Fierros, Marta ; Dorronsoro, Isabel; Jimeno, M. Luisa; Rodríguez-Franco, María Isabel
Issue Date1997
CitationTetrahedron 53(33) : 11481-11488 (1997)
AbstractRegioselective lipase catalyzed intramolecular transesterification of dipyrazolic tetraester 1 with di-, tri- and tetraethyleneglycol afforded symmetric and, in smaller amounts, asymmetric diester crowns including a 1,3-bis(1H-pyrazol-l-yl)propane unit. Their structures have been unequivocally elucidated after their 1H and I3CNMR spectra and INEPT experiments.
Publisher version (URL)http://bit.ly/k2kwPL
Appears in Collections:(CENQUIOR) Artículos
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