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2-Bromopyridine-4-boronic acid

2-Chloro-3-pyridylboronic acid

2-Fluoro-4-iodopyridine-3-carboxaldehyde

4-Methylpyridine-2-carboxaldehyde

3,5-Difluoro-4-pyridinecarboxaldehyde

2-Amino-6-pyridinecarboxaldehyde

tert-Butyldimethylsilyl chloride

2,2,2-Trifluoroethylamine

3,3-Dimethyl-2-oxobutyric acid