How is (~2~H_3_)Methyl(~2~H_5_)benzene (CAS: 2037-26-5) typically synthesized?

(~2~H_3_)Methyl(~2~H_5_)benzene (CAS: 2037-26-5) is typically synthesized by deuterium exchange reactions of conventional benzene with deuterium gas over a metal catalyst such as platinum or palladium. The yield and selectivity can be improved by using controlled deuterium environments and appropriate reaction conditions. The catalysts and solvents are chosen based on their compatibility with deuterium and the desired product purity.