Triethylamine → 6-(2-p-Fluorobenzenesulphonamido-indan-5-yl)-4,5-dihydro-pyridazin-3(2H)-on

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Reaction Steps

2.9 g (12.6 mmol) of 6-(2-amino-indan-5-yl)-4,5-dihydropyridazin-3(2H)-one are dissolved in a mixture of 30 ml of dioxan and 10 ml of acetone, and 1.42 g (14 mmol) of triethylamine and 2.8 g of p-fluorobenzenesulphonyl chloride are added. After 2 hours, the mixture is evaporated, water is added to the residue, and the reaction product is filtered off with suction and recrystallised from glacial acetic acid.

Provenance & Evidence