Alongside the norbornene derivative, we recover the chiral auxiliary(4), which can easily be precipated in pentane according to literature . The present paper will deal with the synthesis of these 5 molecules from the starting material 10-Camphorsulfonic acid (10-CSA). The experimental procedure will be detailed in the upcoming sections. Product and intermediates will be characterized with a basic thin layer chromatography (TLC), H 1 and C 13 NMR.