作者:Tetsuo Ohta、Hironori Fujisawa、Mitsuru Kawazome、Yasuto Nakai、Isao Furukawa
DOI:10.1002/jhet.5570380123
日期:2001.1
Novel method for the synthesis of 3-acyl-1,6-dialkyl-7-methyl-1,6-naphthyridine-2,5(1H,6H)-diones (2) was developed. The reaction of 2-acyl-1-alkylamino-1-ethoxyethylenes (1) with acetyl chloride or β-keto amide 3 with acetyl chloride in the presence of p-toluenesulfonic acid gave 2 in moderate yield (14-59% yield).
开发了合成3-酰基-1,6-二烷基-7-甲基-1,6-萘啶-2,5(1H,6H)-二酮的新方法(2)。在对甲苯磺酸的存在下,2-酰基-1-烷基氨基-1-乙氧基乙烯(1)与乙酰氯或β-酮酰胺3与乙酰氯的反应以中等收率(14-59%收率)得到2。