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CuI/sodium picolinate-catalyzed direct arylation of α-substituted cyanoacetates takes place at 60°C in the presence of Cs 2 CO 3 and 4Å molecular sieve, affording 2-alkyl-2-arylcyanoacetates in good to excellent yields. Both electron-rich and electronic-deficient aryl iodides, and some functionalized α-substituted cyanoacetates are compatible with the reaction conditions, thereby allowing...
A number of substituted 2-pyridin-2-yl-1H-benzoimidazoles and 2-(1H-imidazol-2-yl)pyridines were screened for promoting CuI-catalyzed hydroxylation of aryl bromides, which led to the discovery of the combination of CuI and 5-bromo-2-(1H-imidazol-2-yl)pyridine as an effective catalytic system for this transformation. Both electron-rich and electronic-deficient aryl bromides could be converted into...
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