Face selective reduction of the exocyclic double bond in isatin derived spirocyclic lactones
作者:Sandeep Rana、Amarnath Natarajan
DOI:10.1039/c2ob27008k
日期:——
We report an unusual face selectivereduction of the exocyclic double bond in the α-methylene-γ-butyrolactone motif of spiro-oxindole systems. The spiro-oxindoles were assembled by an indium metal mediated Barbier-type reaction followed by an acid catalyzed lactonization.