Dendrons composed of three functionalized cone calix[4]- arene substructures covalently bound to rigid C3-symmetric tris-anilino cores through amide linkages have been ob- tained by a divergent synthetic protocol involving the cou- pling of p-nitrocalix[4]arene butanoic acid 9 with tris(4-ami- nophenyl)amine (TAPA), 1,3,5-tris(4-aminophenyl)benzene(TAPB), and 2,4,6-tris(4-aminophenyl)-s-triazine (TAPT). Two different amidation procedures were used to generate the dodecanitro intermediates (through activation of acid 9 with PyBOP catalyst or transformation into its acid chloride). The final reduction to the title dodecaamino dendrons was smoothly carried out with H2 and Raney-Ni catalyst.
Titolo: | Amino Surface-Functionalized Tris(calix[4]arene) Dendrons with Rigid C3- Symmetric Propeller Cores |
Autori interni: | |
Data di pubblicazione: | 2011 |
Rivista: | |
Citazione: | Amino Surface-Functionalized Tris(calix[4]arene) Dendrons with Rigid C3- Symmetric Propeller Cores / GIUSEPPE GATTUSO; GIULIA GRASSO; NINO MARINO; ANNA NOTTI; PAPPALARDO A; SEBASTIANO PAPPALARDO; MELCHIORRE F. PARISI. - In: EUROPEAN JOURNAL OF ORGANIC CHEMISTRY. - ISSN 1434-193X. - (2011), pp. 5696-5703. |
Handle: | http://hdl.handle.net/20.500.11769/9811 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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