5-hydroxy-2-(3-methyl-butyl)-3-oxo-6-thiophen-2-yl-2,3-dihydro-pyridazine-4-carboxylic acid ethyl ester 、
盐酸 在
乙酸乙酯 、
2-(3-methyl-butyl)-6-thiophen-2-yl-2H-pyridazine-3,5-dione 作用下,
以
1,4-二氧六环 、
二氯甲烷 为溶剂,
反应 4.0h,
以the desired product, 2-(3-methyl-butyl)-6-thiophen-2-yl-2H-pyridazine-3,5-dione (0.215 g, 0.814 mmol) was obtained as a thick oil的产率得到2-(3-methyl-butyl)-6-thiophen-2-yl-2H-pyridazine-3,5-dione