Sulfuryl chloride → 4-Propoxy-3-(5-methyl-4-oxo-7-cyclopentyl-3,4-dihydro-imidazo[5,1-f][1,2,4]-triazin-2-yl)-benzenesulphonyl chloride

Participants

Reaction Steps

The preparation is carried out analogously to the procedure of Example 27A using 0.7 g (2 mmol) of 2-(2-propoxyphenyl)-5-methyl-7-cyclopentyl-3H-imidazo[5,1-f][12,4]triazin-4-one (Example 17A). This gives 0.8 g (89.3%) of sulphonyl chloride as a white foam which is directly reacted further.

Provenance & Evidence