苯并[一种新颖和有效的合成˚F ]通过I异吲哚-4,9-二酮2的促进的环化反应Ñ取代的氨基酸酯和醌已经成功地实现了通过使用KF作为一个前所未有的1,3-偶极环加成基地。发现不同的取代的氨基酯能够通过环加成反应与醌反应,得到2-取代的苯并[ f ]异吲哚-4,9-二酮。这些令人感兴趣的化合物的出人意料的,短暂的,有吸引力的和直接的合成是重要和相关的,并且为合成2-取代的苯并[ f ]异吲哚-4,9-二酮提供了极其优选的方法。
The first iodine improved 1,3-dipolar cycloaddition: facile and novel synthesis of 2-substituted benzo[f]isoindole-4,9-diones
作者:Huan-Ming Huang、Jian-Rong Gao、Li-Fen Hou、Jian-Hong Jia、Liang Han、Qing Ye、Yu-Jin Li
DOI:10.1016/j.tet.2013.08.029
日期:2013.10
The first novel protocol of the synthesis of 2-substituted benzo[f]isoindole-4,9-dione framework via the one-pot, 1,3-dipolarcycloaddition of quinones, paraformaldehyde and N-substituted amino ester hydrochlorides in the present of iodine at refluxing acetonitrile was reported. All these reactions proceed with good to excellent yields. The promising results obtained 1,3-dipolarcycloaddition will
A novel and efficientsynthesis of benzo[f]isoindole-4,9-diones through the I2-promoted cyclization reaction of N-substituted amino acidesters and quinones has been realized successfully via an unprecedented 1,3-dipolarcycloaddition using KF as the base. Different substituted amino esters were found able to react with quinones through a cycloadditionreaction to afford 2-substituted benzo[f]isoindole-4
苯并[一种新颖和有效的合成˚F ]通过I异吲哚-4,9-二酮2的促进的环化反应Ñ取代的氨基酸酯和醌已经成功地实现了通过使用KF作为一个前所未有的1,3-偶极环加成基地。发现不同的取代的氨基酯能够通过环加成反应与醌反应,得到2-取代的苯并[ f ]异吲哚-4,9-二酮。这些令人感兴趣的化合物的出人意料的,短暂的,有吸引力的和直接的合成是重要和相关的,并且为合成2-取代的苯并[ f ]异吲哚-4,9-二酮提供了极其优选的方法。