10c-dihydropyrenes (2a) and (2b) were spontaneously formed when solutions of the corresponding 5,13-di-t-butyl-8-halogenomethyl-16-methyl[2.2]metacyclophanes (1a) and (1b) in CHCl3 were left for a long time at room temperature; treatment of the [2.2] metacyclophanes (1a) and (1b) with bromine afforded the corresponding tetrabromo-10b,10c-dihydropyrenes (3a) and (3b).
当相应的5,13-二叔丁基-8-的溶液自发形成2,7-二叔丁基-10b-卤代甲基-10c-甲基-10b,10c-二氢py(2a)和(2b)。在室温下,将在CHCl 3中的卤代甲基-16-甲基[2.2]甲基环环酮(1a)和(1b)长时间放置;用
溴处理[2.2]甲基
环已烷(1a)和(1b)得到相应的四
溴-10b,10c-
二氢吡啶(3a)和(3b)。