Domino Reaction for the Construction
of New 2-Oxo[1,2,4]triazolo[5,1-<i>c</i>][1,4]thiazines
作者:Fabio Mantellini、Francisco Palacios、Orazio Attanasi、Samuele Lillini、Jesús de los Santos、Roberto Ignacio
DOI:10.1055/s-0028-1087928
日期:——
The synthesis of highly functionalized α-thiohydrazones by Michael addition of 3-mercapto-2-ketones to 1,2-diazabuta-1,3-dienes is described. The phosphorylated α-thiohydrazones were hydrolyzed into β-ketophosphine oxides or phosphonates containing a mercapto ketone in the a position, while the α-thiohydrazones with a carboxylate group were subsequently transformed into 2-oxo-2,3,8,8a-tetrahydro-1H-[1
描述了通过迈克尔加成 3-巯基-2-酮到 1,2-diazabuta-1,3-二烯来合成高度官能化的 α-硫腙。磷酸化的 α-硫腙被水解成 β-酮膦氧化物或在 a 位含有巯基酮的膦酸酯,而带有羧酸根的 α-硫腙随后被转化为 2-oxo-2,3,8,8a-四氢- 1H-[1,2,4]三唑并[5,1-c][1,4]噻嗪通过多米诺反应。