反应详情

5-Methyl-2,4-dioxo-hexanoic acid ethyl ester (5.6 g, 36.4 mmol) was added to a solution of 4-methoxybenzyl amine (5 g, 36.4 mmol) in acetic acid (40 mL). The mixture was stirred for 10 min at rt. 4-Chloro-2-methylbenzaldehyde (6.77 g, 36.4 mmol) was added. The reaction mixture was heated to 120° C., stirred at this temperature overnight, allowed to cool to rt and diluted with acetonitrile. The resulting precipitate was collected by vacuum filtration and dried to provide 11 g of the title compound. tR: 1.80 min (LC-MS 2); ESI-MS: 414 [M+H]+ (LC-MS 2).

1. temperatureThe reaction mixture was heated to 120° C.
2. stirringstirred at this temperature overnight
3. temperatureto cool to rt
4. filtrationThe resulting precipitate was collected by vacuum filtration
5. customdried