Reaction of 2-Aryl-4-Cyano-1,3-Oxazole-5-Sulfonyl Chlorides With 5-Amino-1H-Pyrazoles and 5-Amino-1H-1,2,4-Triazole
作者:A. N. Kornienko、S. G. Pil’o、A. P. Kozachenko、V. M. Prokopenko、E. B. Rusanov、V. S. Brovarets
DOI:10.1007/s10593-014-1450-2
日期:2014.4
riles. The action of sodium hydride on these carbonitriles leads to the elimination of sulfur dioxide and cyclocondensation to give new heterocyclic systems, namely, [1,3]oxazolo[5,4-d]pyrazolo[1,5-a]-pyrimidine and [1,3]oxazolo[5,4-d][1,2,4]triazolo[1,5-a]pyrimidine.
2-芳基-4-氰基-1,3-恶唑-5-磺酰氯与5-氨基-3-R-1 H-吡唑和5-氨基-1 H -1,2,4-三唑的反应得到5-[(3-R-5-氨基-1 H-吡唑-1-基)磺酰基] -2-芳基-1,3-恶唑-4-碳腈和5-[(5-氨基-1 H -1,2,4-三唑-1-基磺酰基] -2-芳基-1,3-恶唑-4-腈。氢化钠对这些腈的作用导致消除二氧化硫和环缩合,生成新的杂环系统,即[1,3]恶唑并[5,4- d ]吡唑并[1,5- a ]-嘧啶和[ 1,3]恶唑[5,4- d ] [1,2,4]三唑[1,5- a ]嘧啶。