Introduce a functional group at a specific position on the pyridine ring. The regioselectivity of this step is crucial for the desired fluoroalkyl substitution pattern. This can be achieved through various synthetic methodologies, including selective bromination, acylation, or other functional group transformations.
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Acetic acid, [[(1E)-2-phenyl-1-(trifluoromethyl)ethenyl]imino]-, ethyl ester, (2E)-
