Palladium(0)‐Catalyzed CarbonHydrogen Bond Functionalization for the Synthesis of Indoloquinazolinones
作者:Chihiro Tsukano、Masataka Okuno、Hiromi Nishiguchi、Yoshiji Takemoto
DOI:10.1002/adsc.201400078
日期:2014.5.5
methods for the compound are simple and direct, but are not effective for the direct synthesis of indoloquinazolinone with a methylene group at the C‐6 position. A palladium(0)‐catalyzed cyclization of chloroquinazolinone via CH functionalization was developed for a concise synthesis of indoloquinazolinone derivatives. The presence of a substituent at the C‐6 position is important for obtaining the
吲哚喹唑啉酮环系统作为药效团引起了相当大的关注,因为它显示出各种生物活性。已报道的该化合物的合成方法简单,直接,但对直接合成C-6位上带有亚甲基的吲哚并喹唑啉酮无效。钯(0)chloroquinazolinone的催化的环化通过Ç ħ官能度为indoloquinazolinone衍生物的简明合成显影。在C-6位置存在取代基对于以高收率获得产物很重要。反应中间物,尤其是所述N个的构象 Ç 钯键角,是用于该反应的区域选择性重要。