Abstract
Abstract magnified imagePalladium‐catalyzed Suzuki reactions were performed on 4‐chlorothieno[2,3‐d]pyrimidines under classical heating conditions and under microwave irradiation. Some unexpected results were obtained during this study as two kinds of compounds were isolated depending on the conditions used. A careful investigation of experimental details has shown that the expected CC bond formation occurred when degassed solvents were used (both in classical and microwave heating) whereas an unexpected CO bond formation happened when solvents were not degassed with argon‐bubbling before use. J. Heterocyclic Chem., 46, 459 (2009).
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