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

3-(4-Fluorobenzoyl)thiophene

3-(3,4-Dimethylbenzoyl)thiophene

3-(2,3-Dichlorobenzoyl)thiophene

3-(3,4-Dichlorobenzoyl)thiophene

3-(3,4-Difluorobenzoyl)thiophene

Ethyl 7-oxo-7-(3-thienyl)heptanoate

5-(1,3-Dioxolan-2-yl)-2-thienyl pentyl ketone