2-[2-(t-Butyldimethylsilanyloxy)ethyl]-4-(4-fluorophenyl)-3,5-dioxo-2,3,4,5-tetrahydro-[1,2,4]triazine-6-carboxylic acid 、 、 、 4-(4-Fluorophenyl)-3,5-dioxo-2-prop-2-ynyl-2,3,4,5-tetrahydro-[1,2,4]triazine-6-carboxylic acid ethyl ester 生成
4-(4-fluorophenyl)-2-(2-hydroxyethyl)-3,5-dioxo-2,3,4,5-tetrahydro-[1,2,4]triazine-6-carboxylic acid