2,2,4-trichloro-3-phenylcyclobutenone

N-isopropyl-N-(2,2,4,4-tetrachloro-3-phenylcyclobutylidene)amine

3-(1-methylethoxy)-4-phenyl-3-cyclobutene-1,2-dione

2-chloro-2-phenyl-3,3,4,4-tetramethoxycyclobutanol

碘苯