Klasek, Antonin; Lyčka, Antonín; Kremen, Filip; Ruzicka, Ales; Rouchal, Michal
(MDPI-Molecular diversity preservation international, 2022)
New tetrahydropyrazino[2,3-c]quinolin-5(6H)-ones were prepared from 3-chloroquinoline-2,4(1H,3H)-diones and ethylene diamine. In their reaction with HNCO, an unprecedented molecular rearrangement produced new types of ...