反应详情

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][1,2,4]-triazin-4-one (Example 17A). This gives 0.8 g (89.3%) of sulphonyl chloride as a white foam which is directly reacted further.