中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
5-溴-1-乙基-1H-吲哚-2,3-二酮 | 5-bromo-N-ethylisatin | 69736-76-1 | C10H8BrNO2 | 254.083 |
A short and robust approach for the synthesis of 2-(hetero)aryl substituted thieno[2,3-
An efficient tosylhydrazine-mediated conjugate reduction of 3-phenacylideneoxindole and sequential Michael/intramolecular aldol reaction is reported under base-catalyzed conditions towards the formation of densely substituted dispirocyclopentanebisoxindole derivatives. The reaction proceeded in a diastereoselective manner to afford four chiral stereocenters. The method also has advantages of wide substrate scope, readily available starting materials and operational simplicity through one pot reaction.