Alkenes and alkanes were converted into fully deuterium labelled ones by treatment with palladium on charcoal and deuterium oxide under hydrothermal condition. The simple method to get fully deuterium labelled compounds is easy to apply to various types of organic compounds.
A water molecule is partially cleaved on a palladium or platinum metal surface under hydrothermal conditions to form an active platinum species. The species is effective for C-H bond functionalization which can be applied for H/D-exchange reactions, C-C bond-forming reactions, and C-N bond-forming reactions.