First use of p-tert-butylcalix[4]arene-tetra-O-acetate as a nanoreactor having tunable selectivity towards cross azo-compounds by trapping silver ions

p-tert-Butylcalix[4]arene-tetra-O-ac etate was established for the first time as a member of the nanoreactor series, even without having any -OH group. The nano range distribution of this nanoreactor was ascertained by DLS, SEM and TEM studies. The capability of this cavitand towards hosting amines...

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Bibliographic Details
Published in:Green chemistry : an international journal and green chemistry resource : GC 2016-01, Vol.18 (2), p.442-451
Main Authors: Sarkar, Piyali, Mukhopadhyay, Chhanda
Format: Article
Language:English
Subjects:
Amines
Cross coupling
Nanostructure
Pathways
Silver nitrates
Solvents
Synthesis
Trapping
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Summary:p-tert-Butylcalix[4]arene-tetra-O-ac etate was established for the first time as a member of the nanoreactor series, even without having any -OH group. The nano range distribution of this nanoreactor was ascertained by DLS, SEM and TEM studies. The capability of this cavitand towards hosting amines in a competitive manner generates a new green pathway for cross coupling of aromatic amines to give the corresponding azo-compounds. In this context, using p-tert-butylcalix[4]arene-tetra-O -acetate as a nanoreactor and silver nitrate as a catalyst, we got the cross azo-compound in good to excellent yields in the eco-friendly solvent water. This green methodology is also applicable for the synthesis of respective homo-compounds.
ISSN:1463-9262
1463-9270
DOI:10.1039/c5gc01859e