Solid-phase synthesis of quinoxaline, thiazine, and oxazine analogs through a benzyne intermediate
作者:Seth Dixon、Xiaobing Wang、Kit S. Lam、Mark J. Kurth
DOI:10.1016/j.tetlet.2005.08.061
日期:2005.10
A solid-phase synthetic route to quinoxaline, thiazine, and oxazine analogs is described. N-Alloc-3-amino-3-(2,4-difluoro-5-nitrophenyl)propanoic acid was tethered to Rink resin via its carboxylic acid group. The 4-arylfluorine was displaced with a primary amine, alcohol, or thiol to create, respectively, a resin bound aniline, phenol, or thiophenol derivative with one diversity element and one single
描述了到喹喔啉,噻嗪和恶嗪类似物的固相合成路线。N -Alloc-3-氨基-3-(2,4-二氟-5-硝基苯基)丙酸通过其羧酸基束缚在Rink树脂上。用芳基伯胺,醇或硫醇置换4-芳基氟,分别生成树脂结合的苯胺,苯酚或硫酚衍生物,具有一个多样性元素和一个单原子(例如N,S或O)多样性点。随后通过由强碱脱氟化氢引发的苯并杂环杂环形成稠合杂环系统。酸处理以高收率和中等纯度释放了所需的产物。