2-Chloro-4-hydroxybenzaldehyde → 2-[3-Chloro-4-({[4-trifluoromethyl-6-(4-trifluoromethyl-phenyl)-pyridine-3-carbonyl]-amino}-methyl)-phenoxy]-2-methyl-propionic acid ethyl ester

Participants

Reaction Steps

In analogy to the procedures described in example 26B] and 26C], 2-(4-aminomethyl-3-chloro-phenoxy)-2-methyl-propionic acid ethyl ester (prepared from 2-chloro-4-hydroxy-benzaldehyde by reaction with ethyl-bromoisobutyrate as described in example 52A] followed by oxim formation and reduction as described in examples 97A] and 97B]) was reacted with 4-trifluoromethyl-6-(4-trifluoromethyl-phenyl)-nicotinic acid (prepared from 4-trifluoromethyl-6-(4-trifluoromethyl-phenyl)-nicotinic acid methyl ester (example 108B]) by saponification in analogy to example 53B]) to give 2-[3-chloro-4-({[4-trifluoromethyl-6-(4-trifluoromethyl-phenyl)-pyridine-3-carbonyl]-amino}-methyl)-phenoxy]-2-methyl-propionic acid ethyl ester, which was subsequently saponified to yield the title compound as amorphous light yellow solid.

Provenance & Evidence