1,3-Diphenylbenzo[e][1,2,4]triazin-7(1H)-one: Selected Chemistry at the C-6, C-7 and C-8 Positions
作者:Panayiotis A. Koutentis、Harry Krassos、Daniele Lo Re
DOI:10.1039/c1ob05410d
日期:——
1,3-Diphenylbenzo[e][1,2,4]triazin-7(1H)-one (6) reacts with tetracyanoethylene (TCNE) or tetracyanoethylene oxide (TCNEO) to give the deep green 2-[1,3-diphenylbenzo[e][1,2,4]triazin-7(1H)-ylidene]propanedinitrile (11) in 17 and 15% yields, respectively. Nucleophiles such as amines, alkoxides, thiols and Grignard reagents all reacted with the 1,3-diphenylbenzotriazinone 6 regioselectively at C-6,
1,3-二苯基苯并[ e ] [1,2,4]三嗪-7(1 H)-one(6)与四氰基乙烯 (TCNE)或 四氰基环氧乙烷 (TCNEO)给深绿色 2- [1,3-二苯基苯并[ e ] [1,2,4]三嗪-7(1 H)-亚烷基]丙烷腈(11)的产率分别为17%和15%。亲核试剂(例如胺,醇盐,硫醇和格氏试剂)均在C-6处与1,3-二苯基苯并三嗪酮6发生区域选择性反应,而卤化剂仅在C-8处反应。此外,8-碘-1,3-二苯基苯并[ e ] [1,2,4]三嗪-7(1 H)-one(32)经历钯催化的Suzuki-Miyaura和Stille偶联反应,得到8-芳基或杂芳基取代的苯并三嗪酮。通过结合使用C-6和C-8化学1,3,6,8-四苯基苯并[ e ] [1,2,4]三嗪-7(1 H)-one(42)和1,3-二苯基-6,8-二(噻吩-2-基)-苯并[ e ] [1,2,4]三嗪-7(1 H)-