Synthesis and reactivity of 3-tert-butyl-8-r-pyrimido-[4′,5′:3,4]pyrazolo[5,1-c][1,2,4]triazine-4,10(6h,9h)-dithiones
作者:L. M. Mironovich、A. Yu. Podol’nikova
DOI:10.1134/s1070428015030197
日期:2015.3
Treatment of 3-tert-butyl-8-R-pyrimido[4',5':3,4]pyrazolo[5,1-c][1,2,4]triazine-4,10(6H,9H)-diones with diphosphorus pentasulfide gave 3-tert-butyl-8-R-pyrimido[4',5':3,4]pyrazolo[5,1-c][1,2,4]triazine-4,10(6H,9H)-dithiones whose hydrazinolysis afforded 3-tert-butyl-10-hydrazinyl-8-R-pyrimido[4',5':3,4]pyrazolo[5,1-c][1,2,4]triazine-4(6H)-thiones. 3-tert-Butyl-10-hydrazinylpyrimido[4',5':3,4]pyrazolo[5,1-c][1,2,4]-triazine-4(6H)-thione reacted with sodium nitrite in phosphoric or polyphosphoric acid yielding 10-azido-3-tert-butylpyrimido[4',5':3,4]pyrazolo[5,1-c][1,2,4]triazine-4(6H)-thione and 3-tert-butyltetrazolo[1aEuro(3),5aEuro(3):3',4']pyrimido[5',6':3,4]pyrazolo[5,1-c][1,2,4]triazin-4(12H)-one, respectively.