Cyclobuta[c]phenanthrene-1,2-dione

naphtho[1,2-e][2]benzofuran-1,3-dione

1,7-diethynylnaphthalene

1,2-dihydroacenaphthylen-3-ylmethanol

2-(acenaphthylen-3'-yl)-1,1-dibromoethene