Hypervalent iodine(iii)-induced oxidative [4+2] annulation of o-phenylenediamines and electron-deficient alkynes: direct synthesis of quinoxalines from alkyne substrates under metal-free conditions
作者:Sota Okumura、Youhei Takeda、Kensuke Kiyokawa、Satoshi Minakata
DOI:10.1039/c3cc45469j
日期:——
Hypervalent iodine(III)-induced oxidative [4+2] annulation of o-phenylenediamines and electron-deficient alkynes under metal-free conditions has been developed. The reaction allows for direct access to quinoxalines bearing two electron-withdrawing groups in an efficient manner.
超价碘(III)在无金属条件下引发的氧化[4+2]环化反应,成功实现了邻苯二胺与缺电子炔烃的合成。该反应高效地直接合成了带有两个吸电子基团的喹喔啉类化合物。