Tandem Blaise–Nenitzescu reaction: one-pot synthesis of 5-hydroxy-α-(aminomethylene)benzofuran-2(3H)-ones from nitriles
作者:Yu Sung Chun、Ka Yeon Ryu、Ju Hyun Kim、Hyunik Shin、Sang-gi Lee
DOI:10.1039/c0ob01024c
日期:——
In contrast to the reaction of benzoquinones with β-enaminoesters providing indoles (Nenitzescu reaction), the tandem one-pot reaction of the Blaise reaction intermediate, zinc bromide complex of β-enaminoesters, with benzoquinone affords 5-hydroxy-α-(aminomethylene)benzofuran-2(3H)-ones in good to excellent yields (tandem BlaiseâNenitzescu reaction).