“NONO” calix[4]arene zirconium complexes with functionalized side chains
Abstract
A series of zirconium (IV) complexes with a bis(N,N-Dimethylethylenediamino)-p-tert-butylcalix[4]arene, (L2H2), and (1S,2S)-N1,N1-Dimethyl-1,2-cyclohexanediamino -p-tert-butylcalix[4]arene, (L3H2), were synthetized and structurally characterized via single crystal X-ray diffraction and NMR. Comparing them with L1 complexes,1 slight increase in the stability towards protic substrates was observed as well as formal HCl elimination and formation of an anilino-anilido complex was observed for L3. Rac-lactide polymerization was attempted as well as intermolecular hydroamination of alkynes. The effect of the coordinating and basic side chains modifies the reactivity of the complexes but still do not show remarkable improvements in the catalytic applications.
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BibTeX
@misc{cardoso2026nono,
title = {{“NONO” calix[4]arene zirconium complexes with functionalized side chains}},
author = {Matteo Cardoso and Jacques Beauchemin-Ratté and Frank Schaper},
howpublished = {ChemRxiv},
year = {2026},
month = oct,
doi = {10.26434/chemrxiv.15010934/v1},
url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010934/v1},
note = {CC BY},
}
RIS
TY - UNPB
TI - “NONO” calix[4]arene zirconium complexes with functionalized side chains
AU - Matteo Cardoso
AU - Jacques Beauchemin-Ratté
AU - Frank Schaper
PY - 2026
DA - 2026/10/23
PB - ChemRxiv
DO - 10.26434/chemrxiv.15010934/v1
UR - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010934/v1
AB - A series of zirconium (IV) complexes with a bis(N,N-Dimethylethylenediamino)-p-tert-butylcalix[4]arene, (L2H2), and (1S,2S)-N1,N1-Dimethyl-1,2-cyclohexanediamino -p-tert-butylcalix[4]arene, (L3H2), were synthetized and structurally characterized via single crystal X-ray diffraction and NMR. Comparing them with L1 complexes,1 slight increase in the stability towards protic substrates was observed as well as formal HCl elimination and formation of an anilino-anilido complex was observed for L3. Rac-lactide polymerization was attempted as well as intermolecular hydroamination of alkynes. The effect of the coordinating and basic side chains modifies the reactivity of the complexes but still do not show remarkable improvements in the catalytic applications.
ER -