A Novel Convenient Synthesis of 8-Oxo-3-thioxo-2,3,7,8-tetrahydro-1,2,4-triazolo[4,3-<i>a</i>]pyrazines
作者:Kee-Jung Lee、Seongkon Kim、Hyunsuk Um、Hokoon Park
DOI:10.1055/s-1989-27346
日期:——
A novel method for the synthesis of 8-oxo-3-thioxo-2,3,7,8-tetrahydro- 1,2,4-triazolo[4,3-a]pyrazines 3 consists of an intramolecular condensation reaction of substituted 1,2,4-triazoline-3-thiones 9, which possess acetal and aminocarbonyl moieties, with 5% hydrochloric acid. This method is convenient by virtue of its simplicity and the good yields.
一种合成8-氧代-3-硫杂-2,3,7,8-四氢-1,2,4-三唑并[4,3-a]吡嗪3的新方法,涉及具有缩醛和氨基甲酰基团的内式取代的1,2,4-三唑啉-3-硫酮9与5%盐酸的分子内缩合反应。该方法因其简便性和良好的产率而变得方便易行。