作者:Yasunori Sudoh、Katsunobu Onitsuka、Kimiaki Imafuku、Hisashi Matsumura
DOI:10.1246/bcsj.56.3358
日期:1983.11
3-Acetyltropolone reacted with 1,2-ethanediamine to give N,N′-bis(3-acetyl-2-oxo-3,5,7-cycloheptatrienyl)-1,2-ethanediamine (3) and 5-acetyl-3,4-dihydro-2H-cyclohepta[b]pyrazine (4), along with a small amount of by-products, which were 8-acetyl-1,2,3,4-tetrahydro-5-quinoxalinecarbaldehyde (5), 5-acetyl,2,3,4-tetrahydroquinoxaline (6), and 2-methyl-5,6-dihydro-4H-pyrrolo[1,2,3-de]quinoxaline (7). The
3-Acetyltropolone 与 1,2-乙二胺反应得到 N,N'-bis(3-acetyl-2-oxo-3,5,7-cycloheptatrienyl)-1,2-乙二胺 (3) 和 5-acetyl-3 ,4-dihydro-2H-cyclohepta[b]pyrazine (4),以及少量副产物,即 8-acetyl-1,2,3,4-tetrahydro-5-quinoxalinecarbaldehyde (5), 5 -乙酰基,2,3,4-四氢喹喔啉 (6) 和 2-甲基-5,6-二氢-4H-吡咯并[1,2,3-de]喹喔啉 (7)。次要产物 (5-7) 由化合物 4 的七元环收缩产生。 2-乙酰基-7-甲氧托酮 (2a) 也与 1,2-乙二胺反应得到相同的产物 (3-7 ) 的收益更高。另一方面,3-乙酰-2-甲氧托酮(2b)的相同反应很容易得到4-7。2a 与 N-甲基-1