118657-89-9
3a,4,9,9a-tertahydro-9a-chloro-3,3-dimethyl-4,9-dioxo-3H-benz[f]indazole
29560-70-1
2-chloro-3-propan-2-ylnaphthalene-1,4-dione
118658-02-9
1a,7a-dihydro-1a-chloro-1,1-dimethyl-1H-cyclopropanaphthalene-2,7-dione

参考文献

Nakano, Yoshihiko; Hamaguchi, Masashi; Nagai, Toshikazu Journal of Organic Chemistry, 1989 , vol. 54, # 5 p. 1135 - 1144