Mixed-magnesium/zinc calix[4]arene complexes: structure, and ring opening polymerisation studies.
Henry J S BanksJosef W A FreseMark R J ElsegoodCarl RedshawPublished in: Chemical communications (Cambridge, England) (2023)
Different combinations of organomagnesium reagents and zinc bromide react with either 1,3-dimethoxy-4- tert -butylcalix[4]areneH 2 (L(OMe) 2 H 2 ) or trialkoxycalix[4]arenes (L(OR) 3 H) (R = n -Pr, n -pentyl) to afford mixed-metal calix[4]arene systems. Intriguing molecular structures are formed and the systems are capable of the ring opening polymerisation of ε-caprolactone under N 2 , air, or as melts.