3,5-Dichloro-4'-n-pentylbenzophenone

2-chloro-5-picolinoylpyridine

2-chloro-5-(2-thenoyl)pyridine

Ethyl 7-(2-chloro-3-pyridyl)-7-oxoheptanoate

ethyl 5-thenoyl-2-thiophene carboxylate

4-(2-Chloro-3-pyridyl)-4-oxobutyronitrile

2-Chloro-3-(5-chlorovaleryl)pyridine

2-bromo-5-(4-nitrobenzoyl)thiophene

Ethyl 5-(3-oxocyclohexyl)-2-thiophenecarboxylate

3-(2-Carboethoxybenzoyl)thiophene

3-(4-thiomethylbenzoyl)thiophene