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

3-(2-Carboethoxybenzoyl)thiophene

3-(3-Bromobenzoyl)thiophene

3-(3-Chlorobenzoyl)thiophene

3-(4-Bromo-2-fluorobenzoyl)thiophene

Cyclopentyl 3-thienyl ketone

Ethyl 4-oxo-4-(3-thienyl)butyrate

Butyl 5-(1,3-Dioxolan-2-yl)-2-thiophenecarboxylate

Cyclopropyl 5-(1,3-dioxolan-2-yl)-2-thienyl ketone

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

5-(1,3-Dioxolan-2-yl)-2-(4-methoxybenzoyl)thiophene