Year 2007, Month 6 (Section Full Articles, Page 1144)
Synthesis of calix[4]resorcinarenes, containing phosphoryl fragments at the lower rim of the molecule
A. R. Burilov, I. R. Knyazeva, Yu. M. Sadykova, M. A. Pudovik, W. D. Habicher, I. Baier, and A. I. Konovalov
Reaction of resorcinol with phosphorylated acetals or ethoxyvinylphosphonic acid esters in acidic media leads to calix[4]resorcinarenes, containing dialkoxyphosphoryl fragments at the lower rim of the molecule. When the alkyl substituent in alkoxy groups at phosphorus atom is not very long, a partial hydrolysis of the initially formed products takes place to give calixarenes with alkoxyhydroxyphosphoryl fragments.
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