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Calixarenes 50th Anniversary: Commemorative Issue Rutilius Taurus Aemilianus si l'on ne commence parWe are proud to celebrate the 50th anniversary of the calixarenes. In 1944, Zinke and Ziegler proposed a cyclotetrameric structure for an oligomer extracted from the condensation product mixture obtained by reacting p tert butyl phenol with formaldehyde in the presence of sodium hydroxide. Fifty years on, calixarenes are the basis of many different areas of chemical research, with development occurring at an increasing pace over the past decade in
