Diisopropylethylamine → N'-(5-bromo-4-(4-chlorophenyl)pyridin-2-yl)-2-(2-methyl-6-(trifluoromethyl)pyridin-3-yl)acetohydrazide

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Reaction Steps

The title compound (160 mg, 97%) as a beige powder was prepared from 5-bromo-4-(4-chlorophenyl)-2-hydrazinylpyridine (100 mg, 0.33 mmol), 2-(2-methyl -6-(trifluoromethyl)pyridin-3-yl)acetic acid (75 mg, 0.33 mmol), (i-Pr)2EtN (86 mg, 0.66 mmol) and bromotripyrrolidinophosphonium hexafluorophosphate (PyBop, 190 mg, 0.37 mmol) in CH3CN (2.5 mL) by the procedures analogous to those described for N′-(5-bromo-4-(4-chlorophenyl)pyridin-2-yl)-2-(6-(trifluoromethyl)pyridin-3-yl)acetohydrazide (Example 56C). LC/MS (method B): retention time=1.92 min, [M+H]+=499.0.

Provenance & Evidence