作者:Jan Hlaváč、Jan Slouka、Pavel Hradil、Karel Lemr
DOI:10.1002/jhet.5570370119
日期:2000.1
7-(6-Azauracil-5-yl)-isatin 1 was converted through its thiosemicarbazone 2 to 6-(6-azauracil-5-yl)-2,3-dihydro-5H-1,2,4-triazino[5,6-b]indol-3-thione 3 and through the thiosemicarbazone of appropriate isatinic acid to 2-(2-thio-6-azauracil-5-yl)-6-(6-azauracil-5-yl)-aniline 4. The course of the cyclocondensation of this compound was studied and the reaction was found to proceed in both possible ways
7-(6-氮杂尿嘧啶-5-基)-isatin 1通过它的缩氨基硫脲转化2至6-(6-氮尿嘧啶-5-基)-2,3-二氢-5- ħ -1,2,4-三嗪[ 5,6- b ]吲哚-3-硫酮3并通过适当的isatinic酸的缩氨基硫脲向2-(2-硫代-6-氮杂尿嘧啶-5-基)-6-(6-氮尿嘧啶-5-基) -苯胺4.研究了该化合物的环缩合过程,发现该反应以两种可能的方式进行,得到化合物3和区域异构体6-(2-硫-6-氮杂嘧啶-5-基)-2的混合物。,3-dihydro-5 H -1,2,4-triazino [5,6- b ]-吲哚-3-one 5.取代的苯胺4将其氧化成2,6-双-(6-氮杂嘧啶-5-基)-苯胺7,其用于制备8,的环化导致1- [2,6-双-(6-氮杂嘧啶- 5-基)-苯基] -6-氮杂嘧啶-5-腈9.这是第一个三环的6-氮杂嘧啶,其邻位排列有6-氮杂嘧啶环。