Synthesis of Furo[2,3-<i>d</i>]pyridazin-4(5<i>H</i>)-one and Its<i>N(5)</i>-Substituted Derivatives
作者:Emrah Karahan、Gani Koza、Metin Balci
DOI:10.1002/hlca.201400042
日期:2014.11
report the efficient preparation of furo[2,3‐d]pyridazin‐4(5H)‐one and its N‐substituted derivatives starting from methyl 2‐methylfuran‐3‐carboxylate. The Me group was converted to the aldehyde group, which was then condensed with hydrazine derivatives. Then, the ester functionalities were hydrolyzed to the corresponding acids, followed by treatment with SOCl2 to give N‐substituted furopyridazinone derivatives
我们报道了从2-甲基呋喃-3-羧酸甲酯开始有效制备呋喃并[2,3 - d ]哒嗪-4(5 H)-one及其N-取代衍生物的方法。Me基团转化为醛基团,然后与肼衍生物缩合。然后,将酯官能团水解成相应的酸,然后用SOCl 2处理,得到N-取代的呋喃并哒嗪酮衍生物。