aDipartimento di Metodologie Fisiche e Chimiche per l'Ingegneria, Universita di Catania, Catania, Italy bDipartimento di Ingegneria Chimica, dei Materiali delle Materie Prime e Metallurgiche, Universita di Roma 'La Sapienza', Rome, Italy
Аннотация:
The phosphorylated calyx[4]arenoid para- and meta-substituted cyclophane tetramers, which were synthesised in good yields starting from parent cyclic hydrocarbons, show a ‘saddle-shaped’ rigid conformation in solution, and the methylenephosphonic acid dialkyl ester groups are in a strategic position for complexation with neutral guests.