Patent ID: 8765993

Claim:
A one pot method for preparing carbamates in a single reactor, comprising a reaction between at least: a nitro compound, an organic carbonate of the formula (OR)(OR′)C═0 wherein R and R′ are each independently selected from substituted alkyl groups having between 1 to 20 carbon atoms, substituted aryl groups and non-substituted aryl groups, or R and R′ are identical and selected from methyl and ethyl, a gas selected from hydrogen gas, and a mixture of gases containing hydrogen and hydrogen precursor compounds, and a catalyst selected from CeO 2 , TiO 2 , Au/CeO 2 , interior gold nanoparticles-exterior palladium nanoparticles supported on TiO 2 in anatase phase, a metal from group 10 or 11 supported on CeO 2 or TiO 2 , and an alkali metal supported on Au/CeO 2 .