Asymmetric Tandem Michael Addition/Interrupted Nef Reactions of Nitromethane with Oxindole-Derived Alkenes: Enantioselective Synthesis of Spiro-polycyclic Oxindoles
作者:Shengshu Liu、Yu-Chen Yang、Yong-Qi Yang、Xin Li、Pengfei Wang、Yin-Long Li、Jun Deng
DOI:10.1021/acs.orglett.4c00919
日期:2024.4.19
and biologically active compounds. Herein, we reported an asymmetric tandem Michaeladdition/interrupted Nef reaction of nitromethane with oxindole-derived alkenes catalyzed by a chiral 2-aminobenzimidazole bifunctional organocatalyst. A series of novel enantiomerically enriched spiro-polycyclic oxindole derivatives bearing an oxime group were synthesized in moderate to excellent isolated yields (up