**4. Conclusions**

Since the 1960s, when the initial studies on NHC began, and later (1991) when Arduengo isolated the first NHC, the applications of these compounds are growing across various domains of chemistry. Nature itself has chosen an NHC as a part of vitamin B1 to achieve organocatalytic reactions in vivo. Over the past few years, NHCs have unfolded novel categories of enantioselective organic transformations. This chapter provides a brief outline of the fundamental properties and synthesis of NHCs by analyzing different methods used to quantify their steric & electronic properties.
