6-hydroxyaurones with primary amines was used to synthesize 2-benzylidene-8,9-dihydro-7H-furo[2,3-f][1,3]-benzoxazin-3(2H)-one derivatives, while opening of 1,3-oxazine ring in the presence of acid gave secondary amines containing a 6-hydroxyaurone moiety. Acetylation of 2-benzylidene-8,9-dihydro-7H-furo[2,3-f][1,3]benzoxazin-3(2H)-ones was also accompanied by opening of 1,3-oxazine ring.
使用6-羟基
金酮与
伯胺进行
氨基甲基化反应,合成2-亚苄基-8,9-二氢-7 H-
呋喃[2,3- f ] [1,3]-苯并嗪-3(2 H)-一衍
生物,当在酸存在下打开1,3-恶嗪环时,得到含有6-羟基
金酮部分的仲胺。2-亚苄基-8,9-二氢-7 H-
呋喃并[2,3- f ] [1,3]苯并嗪-3(2H)-的乙酰化还伴随有1,3-恶嗪环的打开。