5-hydroxy-3-oxo-6-thiophen-2-yl-2-(1-trifluoromethyl-cyclopropylmethyl)-2,3-dihydro-pyridazine-4-carboxylic acid ethyl ester 、
2-amino-5-iodobenzenesulfonamide 在
氩 、
甲醇 、
5-hydroxy-4-(7-iodo-1,1-dioxo-1,4-dihydro-1λ6-benzo[e][1,2,4]thiadiazin-3-yl)-6-thiophen-2-yl-2-(1-trifluoromethyl-cyclopropylmethyl)-2H-pyridazin-3-one 作用下,
以
吡啶 为溶剂,
反应 32.0h,
以afforded the desired product, 5-hydroxy-4-(7-iodo-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-3-yl)-6-thiophen-2-yl-2-(1-trifluoromethyl-cyclopropylmethyl)-2H-pyridazin-3-one (3d) (0.16 g, 0.257 mmol, 50% yield)的产率得到5-hydroxy-4-(7-iodo-1,1-dioxo-1,4-dihydro-1λ6-benzo[e][1,2,4]thiadiazin-3-yl)-6-thiophen-2-yl-2-(1-trifluoromethyl-cyclopropylmethyl)-2H-pyridazin-3-one