反应详情

The general procedure of Referential Example 3-2) was repeated through use of the 5-hydrazino-2-methylpyridine (1.20 g) prepared in Referential Example 63 and the 4-(2-pyridyl)-2,4-dioxobutanoic acid ethyl ester (3.48 g) prepared in Referential Example 31, to thereby give the title compound as an oily product (0.459 g, 15%).

1. customprepared in Referential Example 63