The condensations of (2-methyloxazolo) coumarin derivatives (I. II. and III) with 5-nitro-2-furaldehyde were proceeded by heating with fused zinc chloride. In this case, I was more readily condensed than II and III with aldehyde groups to give the corresponding condensation products.
(2-甲基
恶唑并)
香豆素衍
生物(I.II.和III)与5-硝基-2-
糠醛通过与熔融
氯化锌一起加热进行缩合。在这种情况下,I比II和III更容易与醛基缩合,得到相应的缩合产物。