Cyclization of Bifunctional 3,5-Diamino-1<b><i>H</i></b>-1,2,4-triazole-1-carboximidamide, 5-Amino-3-hydrazinotriazole and 3,6-Diguanidino-1,2,4,5-tetrazine: A One-Step Route to Fluorinated Heteropolycycles
作者:Jean’ne Shreeve、Zhuo Zeng、Wendell Hyer、Brendan Twamley
DOI:10.1055/s-2008-1067047
日期:2008.6
A series of new fluorine-containing triazolylpyrimidines and pyrimidinoaminotetrazines results from one-pot reactions of 3,5-diamino-1H-1,2,4-triazole-1-carboximidamide hydrochloride and 1,4-diguanidino-2,3,4,5-tetrazine with fluoro-1,3-diketones. Bicyclization of a variety of fluorinated 1,3-diketones gave three fluorinated heterocyclic pyrazolo[1,2,4]triazolo[1,5-a]pyrimidines in moderate yield in a single step.
一系列新的含氟三唑基嘧啶和嘧啶氨基四氮唑是通过将3,5-二氨基-1H-1,2,4-三唑-1-氨基甲酸盐氯化物与1,4-二胍基-2,3,4,5-四氮唑与氟代-1,3-二酮进行一锅反应得到的。各种含氟的1,3-二酮的双环化反应在单步反应中中等产率地生成了三种氟代杂环吡唑[1,2,4]三唑[1,5-a]嘧啶。