(11bS)-4-Hydroxy-2,6-di-2-naphthalenyl-4-oxide-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin, 98%, (99% ee)

Technical Note:
1.Nucleophilic Substitution: Catalyst for the nucleophilic substitution involving 3-hydroxyoxindoles giving 3,3'-disubstituted oxindoles with concomitant generation of an all-carbon quaternary stereogenic center in high yield and excellent enantioselectivity.
Reference:
1.Angew. Chem. Int. Ed., 2012, 51, 1046-1050.