Am. Yuldashev et al., SUBSTITUTED CALIX[N]ARENES - SYNTHESIS OF P-ISOPROPYLCALIX[4]ARENE AND THE STRUCTURE OF ITS BENZENE CLATHRATE, Journal of structural chemistry, 37(3), 1996, pp. 470-473
p-Isopropylcalix[4]arene was synthesized by alkylation of unsubstitute
d calix[4]arene in the presence of ferric chloride hexahydrate. The st
ructure of the compound and its benzene clathrate was established by N
MR spectroscopy and X-ray diffraction analysis.