Dicyano 9,10 dihydro 9,10 ethenoanthracene(4) was synthesized by addition reation of acetylenedinitrile and anthracene. Concave tetrazaporphyrin has been obtained from the four molecules of 4.

乙炔二氰与蒽环加了11,12-二氰-9,10-二氢-9,10-亚乙基蒽(4),4分子4自身加聚了一种全新凹型四氮杂口卜啉结构化物。