反应详情

3.0 g of intermediate compound 8a were reacted in 70 ml of DMF with 2.9 g of N-(2-methoxybenzyl)piperazine analogously to Example 8b in the presence of 5.7 g of potassium carbonate and a spatula tipful of 18-crown-6, 1.3 g (27%) of the product being obtained.