One pot synthesis of spiro pyrimidinethiones/spiro pyrimidinones, quinazolinethiones/quinazolinones, and pyrimidopyrimidines
作者:Poonam Gupta、Shallu Gupta、Anand Sachar、Daljeet Kour、Jasbir Singh、Rattan L. Sharma
DOI:10.1002/jhet.282
日期:——
1:1:3 in solventless reaction in presence of NiCl2/KI afforded 1,5‐diaryl‐3‐thioxo‐2,4‐ diazaspiro[5.5]undecane‐7,11‐dione/1,5‐diaryl‐2,4‐diazaspiro[5.5]undecane‐3,7,11‐trione analogues and 7,11‐diaryl‐9‐thioxo‐2,4,8,10‐tetraazaspiro[5.5]undecane‐1,3,5,‐trione/7,11‐diaryl‐2,4,8,10‐tetraazaspiro[5.5] undecane‐1,3,5,9‐tetraone analogues, respectively. The similar condensation of cyclohexane‐1,3‐dione/cyclohexanone
NiCl 2存在下无溶剂反应中摩尔比为1:1:3的环己烷-1,3-二酮/巴比妥酸,硫脲/脲和芳香醛的缩合反应/ KI提供1,5-二芳基-3-硫代氧2-2,4-二氮杂螺[5.5]十一烷-7,11-二酮/ 1,5-二芳基-2,4-二氮杂螺[5.5]十一烷-3,7,11 -trione类似物和7,11-diaryl-9-thioxo-2,4,8,10-tetraazaspiro [5.5]十一烷-1,3,5,trione / 7,11-diaryl-2-2,4,8,10 -tetraazaspiro [5.5]十一烷-1,3,5,9-四酮类似物。环己烷-1,3-二酮/环己酮,硫脲/脲和芳香醛/杂芳醛在回流的甲醇中以1:1:1的类似比例缩合得到4-芳基/杂芳基-2-硫代氧杂1 2,3,4,5,6,7,8-八氢喹唑啉-5,4-芳基/杂芳基,1,2,3,4,5,6,7,8-八氢喹唑啉-2,5-二酮类似物和4-芳基/杂芳基-1