Synthesis of Calix[4]arene and Porphyrin Tethering Four Chiral Five-Membered Cyclic Carbonates

Calix[4]arene tethering four chiral five-membered cyclic carbonates 1c was synthesized by O -glycidylation of p-tert -butylcalix[4]arene 1a with ( R )-glycidyl tosylate, followed by carbonation with carbon dioxide catalyzed by lithium bromide. Porphyrin tethering chiral five-membered cyclic carbonates 2c was similarly synthesized.