Synthesis of Isoindoles from Intramolecular Condensation of Benzyl Azides with α-Aryldiazoesters
作者:Jing Zhu、Rui Li、Yan Su、Peiming Gu
DOI:10.1021/acs.joc.8b03180
日期:2019.5.3
Rh-catalyzed intramolecular condensation of the benzyl azides with α-aryldiazoesters was explored. The reaction proceeded through the nucleophilic attack of the organic azide onto a rhodium carbenoid, while releasing nitrogen gas, affording the α-imino esters as the primary product. Tautomerization of the imino esters efficiently gave 13 desired isoindoles with good to excellent yields.
探索了Rh催化的叠氮化物与α-芳基重氮酯的分子内缩合。反应通过有机叠氮化物对铑类胡萝卜素的亲核攻击而进行,同时释放氮气,得到α-亚氨基酯作为主要产物。亚氨基酯的互变异构有效地以良好至优异的产率得到13种所需的异吲哚。