N-[(3′-Aryl)prop-2′-ynyl]-N,N′-1,2-phenylene di-p-tosylamides, 15–22, underwent an unusual ring closure with potassium carbonate (2 equiv.) and copper(I) iodide (10 mol%) in DMF at 100°C for 24 h to yield 2-aroylquinoxalines (23–30) instead of the expected 2-alkylidene-1,4-di-tosyl-1,2,3,4-tetrahydroquinoxalines (31).
ñ - [(3'-芳基)丙-2'-炔基] - ñ,Ñ '-1,2-苯二- p -tosylamides,15 - 22(2当量),经历一个不寻常的环闭合用
碳酸钾和
铜(I)
碘化物(10摩尔%)在
DMF中于100℃进行24小时,得到2- aroylquinoxalines(23 - 30),而不是预期的2-亚烷基-1,4-二对
甲苯磺酰-1,2-的, 3,4-四氢
喹喔啉(31)。