3,3',5-Trifluoro-5'-methylbenzophenone

2-Chloro-4'-methylbenzophenone

2-Iodo-4'-n-pentylbenzophenone

3,4-Difluoro-4'-n-pentylbenzophenone

4-Chloro-2'-(thiomethyl)benzophenone

2-Bromo-4'-(methylthio)benzophenone

2-Chloro-3-(2-ethoxycarbonylbenzoyl)pyridine

2-chloro-3-(4-cyanobenzoyl)pyridine

2-Chloro-5-(5-ethoxycarbonyl-2-thenoyl)pyridine

ethyl 5-thenoyl-2-thiophene carboxylate

2-chloro-5-(7-chloroheptanoyl)pyridine