Sodium Carbonate → 3-Bromo-7-[(1e)-3,3-diethoxy-1-propenyl]thieno[3,2-c]pyridin-4-amine

Participants

Reaction Steps

A mixture of Example 21A (200 mg, 0.56 mmol), 2-[(1E)-3,3-diethoxy-1-propenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (175 mg, 0.67 mmol), Pd(PPh3)4 (40 mg, 0.03 mmol) and Na2CO3 (120 mg, 1.13 mmol) in 1,2-dimethoxyethane (10 mL) and water (5 mL) was heated in an 85° C. oil bath for 15 hours. The mixture was cooled to room temperature and concentrated under reduced pressure. The mixture was extracted with dichloromethane and the extract was dried (MgSO4), filtered, and concentrated. The residue was purified by flash column chromatography on silica gel to provide the desired product (150 mg, 75%). 1H NMR (DMSO-d6, 400 MHz) δ 8.02 (s, 1H), 7.88 (s, 1H), 6.74 (d, 1H), 6.09 (dd, 1H), 5.09 (d, 1H), 3.62 (m, 2H), 3.48 (m, 2H), 1.15 (t, 6H); MS m/e 357.1, 359.1 (M+H)+.

Provenance & Evidence