Reaction of 1-substituted 3-aminoquinolinediones with isocyanic and isothiocyanic acid
作者:Vladimír Mrkvička、Ondřej Rudolf、Antonín Lyčka、Antonín Klásek
DOI:10.1016/j.tet.2011.02.002
日期:2011.4
acetic acid to give ureido- or thioureidooxindoles, spiro-oxindoles and dihydroimidazoquinolones. However, if the starting compounds are substituted with a benzyl group at position 3, a C-debenzylation proceeds to give imidazoquinolones. According to a proposed reaction mechanism, a molecular rearrangement of the primarily formed mono-substituted urea or thiourea takes place. All compounds were characterized
1-取代的3-氨基喹啉-2,4(1 H,3 H)-二酮在沸腾的乙酸中与氰酸钾或硫氰酸钾反应,生成脲基或硫脲基氧吲哚,螺-氧吲哚和二氢咪唑并喹啉酮。但是,如果起始化合物在3位被苄基取代,则进行C-脱苄基作用得到咪唑并喹诺酮。根据提出的反应机理,发生了最初形成的单取代的脲或硫脲的分子重排。所有化合物均通过1 H,13 C和IR光谱及MS数据表征。