A facile protocol to access a novel series of spirocyclodiazepines from cyclocondensation of 1-(2-oxo-2-arylethylidene)-5,6-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-2(1H)-ones (derived from 5,6-dihydro-1H-pyrrolo[3,2,1-ij]quinolone-1,2(4H)‑dione) with ethane-1,2-diamines and benzene-1,2-diamines, generates polycyclic spirooxindoles and unexpectedly produces 2-arylquinoxalines instead of spiro[indole-1
从 1-(2-oxo-2-arylethyleneidene)-5,6-dihydro-4 H -pyrrolo[3,2,1- ij ]quinolin-2(1 H的环缩合获得一系列新型螺环二氮杂卓的简便方案)-ones(衍生自 5,6-dihydro-1 H - pyrrolo[3,2,1- ij ]quinolone-1,2(4 H )-dione)与 ethane-1,2-diamines 和 benzo-1,在绿色溶剂中作为有效催化剂的p-
TSA存在下,2-二胺生成多环螺氧
吲哚并出人意料地分别生成 2-芳基
喹喔啉而不是螺[
吲哚-1,5-苯二氮卓] 。