C-Silylated Calix[4]Arene as a New Receptor for Aspartate in Polar Solvents

<table>Synthetic route to calix[4]arene receptos <b>6</b>/<b>7</b>; (i) BuBr, NaH, dry DMF, (ii) BuBr, K<sub>2</sub>CO<sub>3</sub>, (iii) NBS, MEK, (iv) NBS, MEK, K<sub>2</sub>CO<sub>3</sub>, (v) and (vi) Li powder, THF. −78°C, TMSCl.</table>

Organic Chemistry International

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Figure 1

Figure 1: C-Silylated Calix[4]Arene as a New Receptor for Aspartate in Polar Solvents 