Аннотация:
Under kinetic control conditions, 6-methoxy-2-(1,1,2,2-tetrafluoroethyl)chromone reacts with diethylenetriamine to form 5-(2-hydroxy-5-methoxyphenyl)-7-(1,1,2,2-tetrafluoroethyl)-1,4,8-triazabicyclo[5.3.0]dec-4-ene, and the latter undergoes isomerization to the title compound, which is more thermodynamically stable.