Technical Notes:

1.Michael Addition- highly enantioselective catalysts for the Michael addition of a-substituted cyanoacetates to vinyl sulfones, giving an efficient protocol for the construction of an all-carbon substituted quaternary

stereocentre.

2.Asymmetric catalysis of chiral oxindoles bearing 3-position all-carbon quaternary stereocenters.

3.The enantioselective Michael addition of dialkyl phosphites to N-unprotected isatylidene malononitriles .

4.Aldol Reaction- The first example of a direct catalytic asymmetric intermolecular aldol reaction of 3-

isothiocyanato oxindoles to simple ketones.

5.Cascade Aldol-Cyclization- A highly efficient method for the construction of a family of spirooxazolidine-2- thione-oxindoles with 3-isothiocyanato oxindoles and aldehydes via a cascade aldol-cyclization.