Enantiopure Sulfinyl Azobenzenes as Chiroptical Switches

Photoswitchable enantiopure sulfinyl azo compounds have been synthesized. A remarkable perturbation of the azo system by the stereogenic
sulfinyl moiety has been observed by CD in both the trans and the cis azobenzenes resulting by photoisomerization. After five irradiation
cycles, the configurational integrity of these chiral switches remains unchanged.