An efficient one pot synthesis of 3-(2-oxo-2H-chromen-3-yl)-6<i>H</i>,8<i>H</i>-pyrimido[4,5-<i>c</i>]pyridazine-5,7-dionesl
作者:V. Rajeswar Rao、M. Madan Mohan Reddy
DOI:10.1002/jhet.5570420631
日期:2005.9
An easy, simple and versatile one step synthesis of 3-(2-oxo-2H-chromen-3-yl)-6H,8H-pyrimido[4,5-c]-pyridazine-5,7-diones is reported by reaction of 3-acetylcoumarins (1) with alloxan monohydrate (2) in acetic acid followed by hydrazine hydrate.
一种简单,简单且通用的一步合成3-(2-oxo-2 H -chromen-3-yl)-6 H,8 H-嘧啶基[4,5- c ]-哒嗪-5,7-二酮的方法是报道了3-乙酰香豆素(1)与四氧嘧啶一水合物(2)在乙酸中的反应,然后是水合肼的反应。