Ethanol → HCID 68950353, compound

Participants

Reaction Steps

Dissolve 2-bromo-6-(3-methoxy-4-triisopropylsilanyloxy-phenyl)-5,6-dihydro-4H-thieno[2,3-c]pyridin-7-one (2.87 g, 5.46 mmol) in dimethoxyethane (28 mL) followed by addition of EtOH (4 mL) and water (8 mL). Add 4-chlorophenylboronic acid (1.28 g, 8.19 mmol) followed by 2M Na2CO3 (4 mL, 8.19 mmol). Allow dry argon gas to bubble through the reaction mixture for 15-20 min. Add Pd(PPh3)4 (315 mg, 0.27 mmol) and then warm to 90° C. under an argon atmosphere. After 3 h, filter the reaction through Celite® and elute with CH2Cl2. Concentrate and purify via silica gel chromatography using a 0-25% gradient of EtOAc/hexanes to give 2.37 g (80% yield) of the desired product. MS/ES m/z (35Cl) 542.1 [M+H]−.

Provenance & Evidence