Aroylimidazo[1,2-a][1,3,5]triazines are rapidly synthesized via a facile and mild reaction of 2-amino-triazines and 1,3-dicarbonyl compounds using NBS. The reaction occurred with good yields and excellent regioselectivity, and β-keto esters, β-keto amides, and 1,3-diones were tolerated under the optimized procedure. In addition, the successful application of this methodology for a gram-scale reaction
使用NBS通过2-氨基三嗪和1,3-二羰基化合物的轻度和温和反应可以快速合成Aroylimidazo [1,2- a ] [1,3,5]三嗪。该反应以良好的收率和优异的区域选择性进行,并且在优化的程序下耐受β-酮酯,β-酮酰胺和1,3-二酮。此外,这种方法在克级反应中的成功应用表明其具有大量合成的潜力。
Diversity-oriented synthesis of imidazo[1,2-<i>a</i>][1,3,5]triazine derivatives from 2-amine-[1,3,5]triazines with ketones
作者:Wanqiu Zhao、Cheng Zhang、Pengzhen Zhong、Wei Zhou、Chen Zhang、Dong-Mei Cui
DOI:10.1039/d1cc04294g
日期:——
An I2-mediated annulation of 2-amino[1,3,5]triazines and ketones for the synthesis of imidazo[1,2-a][1,3,5]triazines is presented. Electron rich, or electron poor acetophenone and heterocycle ketones, as well as propiophenone, are functionalized with 2-amino-[1,3,5]triazines. Another class of imidazo[1,2-a][1,3,5]triazines tethered with an additional 1,2-dicarbonyl motif through the combination of
提出了用于合成咪唑并[1,2- a ][1,3,5]三嗪的I 2介导的2-氨基[1,3,5]三嗪和酮的环化。富电子或缺电子苯乙酮和杂环酮,以及苯丙酮,用 2-氨基-[1,3,5]三嗪官能化。另一类咪唑并[1,2- a ][1,3,5]三嗪通过环化和C-H官能化的组合与额外的1,2-二羰基基序相连,而不是通过改变反应条件获得。新方法实际上很简单,适用于克级。
Selective Synthesis of N-[1,3,5]Triazinyl-α-Ketoamides and N-[1,3,5]Triazinyl-Amides from the Reactions of 2-Amine-[1,3,5]Triazines with Ketones
作者:Yue Li、Pengzhen Zhong、Junna Zhao、Zexi Pan、Chen Zhang、Dongmei Cui
DOI:10.3390/molecules28114338
日期:——
In this study, we report a selective approach for synthesizing N-([1,3,5]triazine-2-yl) α-ketoamides and N-([1,3,5]triazine-2-yl) amides from ketones with 2-amino[1,3,5]triazines through oxidation and oxidative C−C bond cleavage reaction, respectively. The transformation proceeds undermildconditions, provides good functional group tolerance and chemoselectivity, and will serve as a valuable tool