Acetylacetone → (2-Methyl-4-phenyl-benzo[4,5]thieno[2,3-b]pyridin-3-yl)-ethanone

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 32 mg (0.13 mmol) (2-amino-benzo[b]thiophen-3-yl)-phenyl-methanone in 2 ml acetic acid was added 0.09 ml (0.13 mmol) of pentane-2,4-dione and one drop of sulfuric acid. The mixture was then stirred at 100° C. for 10 minutes in a microwave and then concentrated in vacuo. Flash chromatography (heptane/ethyl acetate 6:1) afforded 21 mg (52%) (2-methyl-4-phenyl-benzo[4,5]thieno[2,3-b]pyridin-3-yl)-ethanone as a light yellow solid. ES-MS m/e (%): 318 (M+H+, 100).

Provenance & Evidence