Pyrimido[4,5-<i>c</i>]pyridazine-5,7(6<i>H</i>, 8<i>H</i>)-diones: Marvelous substrates for study of nucleophilic substitution of hydrogen
作者:Alexander F. Pozharskii、Anna V. Gulevskaya
DOI:10.1002/jhet.5570420304
日期:2005.4
The data on nucleophilicsubstitution reactions of hydrogen in 6,8-dimethylpyrimido[4,5-c]pyridazine-5,7(6H,8H)-dione, its 3-chloride, N2-oxide and some other derivatives are reviewed. All these compounds possess a remarkable ability to undergo not only simple functionalizations but also tandem and cascade transformations leading to annelation of various heterocyclic rings.
氢在6,8-二甲基嘧啶[4,5- c ]哒嗪-5,7(6 H,8 H)-二酮,其3-氯化物,N 2-氧化物和一些其他衍生物中的亲核取代反应数据如下:已审查。所有这些化合物都具有显着的能力,不仅能够进行简单的官能化,而且还能进行串联和级联转化,从而导致各种杂环的环化。