1337551-98-0Relevant articles and documents
Highly diastereo- and enantioselective NHC-catalyzed [3+2] annulation of enals and isatins
Sun, Li-Hui,Shen, Li-Tao,Ye, Song
, p. 10136 - 10138 (2011)
The chiral N-heterocyclic carbene bearing a proximal hydroxy group derived from l-pyroglutamic acid was found to be an efficient catalyst for the [3+2] annulation of enals and isatins to give the corresponding spirocyclic oxindolo-γ-butyrolactones in good yield with good diastereo- and enantioselectivities. The Royal Society of Chemistry 2011.