Ethyl 4-(4-fluorophenyl)-2,4-dioxobutanoate → 5-(4-Fluorophenyl)-1-(6-methoxy-3-pyridyl)pyrazole-3-carboxylic acid ethyl ester

Participants

Reaction Steps

The general procedure of Referential. Example 3-2) was repeated through use of the 5-hydrazino-2-methoxypyridine (1.0 g) prepared in Referential Example 2 and the 4-(4-fluorophenyl)-2,4-dioxobutanoic acid ethyl ester (1.88 g) prepared in Referential Example 134, to thereby give the title compound as an oily product (2.12 g, 86%).

Provenance & Evidence