Synthesis of the functionalized cavitands with inwardly directed dialkylsilyl groups and phosphorous lone pairs

Cavitands endowed with dialkylsilyl groups are described, involving the 1H NMR spectra of nearby δ 0 areas. The differences of chemical shifts between in- and outwardly directed alkyls toward the cavity disclosed that introverted alkyls were put under strong π surroundings. The findings have been amplified to the synthesis of novel phosphorous ligands.