The following building block was synthesized via a C-H activation method developed by Yu and coworkers. The method was incorporated using the Yu-Wasa Auxiliary (Aldrich 791806) and I2 as the sole oxidant for ortho-iodination from the corresponding benzoic acid derivative.
Journal of the American Chemical Society, 135(28), 10326-10329 (2013-07-11)
Pd-catalyzed ortho-C-H iodination directed by a weakly coordinating amide auxiliary using I2 as the sole oxidant was developed. This reaction is compatible with a wide range of heterocycles including pyridines, imidazoles, oxazoles, thiazoles, isoxazoles, and pyrazoles.
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