Abstract
The reaction of calix[4]resorcinolarenes with N,N-dimethylethylenediamine and aqueous CH2O in a molar ratio of 1 : 5 : 5 affords calixarenes containing secondary amino groups arranged on the upper rim of the molecule. When the double amount (with respect to primary amine) of formalin is used (ratio of reactants 1 : 5 : 10), cavitands with four oxazinyl fragments are synthesized.
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References
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Kharitonova, N.I., Burilov, A.R., Pudovik, M.A. et al. Aminomethylated calix[4]resorcinolarenes with NH groups on the upper rim of the molecule. Russian Chemical Bulletin 52, 725–727 (2003). https://doi.org/10.1023/A:1023983412277
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DOI: https://doi.org/10.1023/A:1023983412277