with diphenylketene, thiosemicarbazide or 1,2-diaminobenzene to afford the 3-diphenylmethylene pyrrolones 2, the thiosemicarbazones 4 or the quinoxaline derivatives 5 as well as 6, respectively. Thermolysis of 2b,c,e,f,6b and the pyrrolo-quinoxaline 8 afford the corresponding N-deaminated products 3, 7 and 9. Rearrangements into diazapropellanes following a thermally initiated Fischer - indolization
使熔融的N-(二)芳基
氨基-
吡咯-2,3-二酮1与二苯基
乙烯酮,
硫代
氨基
脲或1,2-二
氨基苯反应,得到3-二苯基亚甲基
吡咯烷酮2,
硫代半
氨基甲酮4或
喹喔啉衍
生物5以及6,分别。热分解图2b,C,E,F,6B和
吡咯并
喹喔啉8得到相应Ñ -deaminated制品3,7和9。如最初预期的那样,在热引发的费歇尔-
吲哚化反应后不会发生重排成二氮杂丙二酮的情况。