Abstract The readily available and polyfunctionalized 3-chloro-6-fluoroquinoxalin-2 (1H)- one 4-oxide, derived from the efficient one-step annulation reaction of 1, 1, 2-trichloro-2- nitroethene with 4-fluoroaniline, was selectively modified at the chloronitrone and the amide units, leading to more than 30 new quinoxaline derivatives with a unique substitution pattern in good to excellent yields. In addition, the electronic properties of the versatile starting ...