Reaction of benzofurazan 1-oxide with 1-(2-naphthyl)-and 1-hetaryl-butane-1,3-diones; preparation of aryl and hetaryl 2-quinoxalinyl ketones
作者:Adnan Atfah、John Hill
DOI:10.1016/s0040-4020(01)89090-6
日期:——
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。