以苯甲醇和邻二甲苯为反应体系的溶剂,在无水三氯化铝催化作用下,经碳正离子机理反应得到了2,3,6,7-四甲基蒽.然后,将2,3,6,7-四甲基蒽与原位生成的苯炔经Diels-Alder反应生成具有独特三维刚性芳香结构的2,3,6,7-四甲基三蝶烯.最后,用红外光谱(IR)和核磁共振氢谱(1 H NMR)表征了2,3,6,7-四甲基蒽和2,3,6,7-四甲基三蝶烯的结构.
O-xylene and benzyl alcohol underwent friedel-crafts alkylation reaction with anhydrous aluminum chloride as catalyst,by way of carbonium ion mechanism to afford 2,3,6,7-tetramethylanthracene.Then,2,3,6,7-tetramethylanthracene and benzyne generated in situ underwent a Diels-Alder reaction to give 2,3,6,7-tetramethyltriptycene containing an unique three-dimensional rigid aromatic structure.Finally,the structures of 2,3,6,7-tetramethylanthracene and 2,3,6,7-tetramethyltriptycene were characterized by IR and 1H NMR spectroscopy.