2-naphthyl) and hetaryl (2-furyl, 3-pyridyl, and 2-thienyl) 3-methyl-2-quinoxalinyl ketones were prepared via the reaction of benzofurazan 1-oxide (BFO) with 1-aryl- and 1-hetaryl-butane-1,3-diones, followed by reduction of the resulting aryl or hetaryl 3-methyl-2-quinoxalinyl ketone 1,4-dioxides with sodium dithionite. 1-(2-Furyl)butane-1,3-dione and 1-(2-pyridyl)butane-1,3-dione yielded 2-acetyl-3-(2-furyl)quinoxaline
芳基(4-
甲氧基苯基和2-
萘基)和杂芳基(2-
呋喃基,3-
吡啶基和2-
噻吩基)3-甲基-2-
喹喔啉基酮是通过
苯并呋喃1氧化物(BFO)与1-
苯并呋喃反应制得的。芳基-和1-杂芳基-
丁烷-1,3-二酮,然后用
连二亚硫酸钠还原所得的芳基或杂芳基3-甲基-2-
喹喔啉基酮1,4-二氧化物。1-(2-
呋喃基)
丁烷-1,3-二酮和1-(2-
吡啶基)
丁烷-1,3-二酮产生2-乙酰基-3-(2-
呋喃基)
喹喔啉1,4-二氧化物和2-乙酰-3-(2-
吡啶基)
喹喔啉1,4-二氧化物分别作为次要产物与BFO反应。报道了1,3-二酮中的杂芳基(或芳基)基团的结构对与BFO反应的影响。