How is [3-Chloro-5-(diethylcarbamoyl)phenyl]boronic acid (CAS: 957120-59-1) typically synthesized?

[3-Chloro-5-(diethylcarbamoyl)phenyl]boronic acid is often synthesized via a reaction of 3-chlorophenylboronic acid with diethyl carbamate under appropriate conditions. This involves the use of a Lewis acid catalyst to facilitate the formation of the boronic ester. The yield of the product can be improved by optimizing the reaction conditions such as temperature and stoichiometry.