Annelation of the thiazole ring to 1,2,4-triazines by tandem A<sub>N</sub>—A<sub>N</sub>or S<sub>N</sub><sup>H</sup>—S<sub>N</sub><sup>H</sup>reactions
作者:N. N. Mochul"skaya、A. A. Andreiko、M. I. Kodess、E. B. Vasil"eva、V. I. Filyakova、A. T. Gubaidullin、I. A. Litvinov、O. G. Sinyashin、G. G. Aleksandrov、V. N. Charushin
DOI:10.1023/b:rucb.0000042287.32992.54
日期:2004.6
The reactions of 3-aryl-1,2,4-triazines with aromatic thioamides and 4-arylthiosemicarbazides in acetic anhydride at room temperature afforded cyclic products of the tandem nucleophilic addition reactions, viz., tetrahydrothiazolo[4,5-e]-annelated 1,2,4-triazines, in good yields. The latter underwent aromatization in the presence of potassium permanganate.