An improved method for the chlorination at the 4-position of 3- arylsydnones 1 was developed, using iodine monochloride (ICl) dissolved in DCM. 1,3,4-Oxadiazol-2(3H)-ones 3 were then synthesized from the resultant 4-chloro-3-arylsydnones 2. The scope and limitations will be presented.
Owens, B. (2018). Chlorination of 3-Arylsydnones with Iodine Monochloride. Wright State University, Dayton, Ohio.