Chemical industry widely uses carbamates, e.g. in the production of insecticides, fungicides, or herbicides. Polycarbamate or conventional polyurethane is applied in plastics, synthetic resins, and adhesives in a variety of branches. The processes that have been used for the production of carbamates so far are subject to considerable limitations. Among the drawbacks of established methods are slow reaction steps and the need for expensive, toxic reactants. Use of the frequently applied, environmentally hazardous isocyanates is increasingly discussed. Scientists of the KIT Institute of Organic Chemistry (IOC) have developed an environmentally compatible production process suited for the industrial scale. The new synthesis method is a base catalytic form of Lossen re-arrangement, which takes place in two steps in a one-pot process under mild conditions. In the first step, hydroxamic acid is supplied as initial material by a freely selectable synthesis process. In the second step, hydroxamic acid is converted with organic carbonates in the presence of catalytic amounts of a tertiary amine. By the addition of amine, Lossen re-arrangement is initiated without any auxiliary materials being required. An alcohol, e.g. methanol, is used to increase the carbonate yield and to prevent the formation of side products. Without alcohol, mainly urea derivatives form by re-arrangement. The mixture is heated under reflux and recleaned. Depending on the substances used, yields of up to 80% are possible. If aromatic hydroxamic acids are used as initial substances, aromatic amines are synthesized. Chemists recommend the use of dimethyl carbonate (DMC), although the process was tested with other carbonates as well. DMC is non-toxic and may be produced from renewable resources. Reduced consumption of resources is one of the reasons why the process is much more sustainable than conventional ones. KIT looks for partners for the industrial use of the process.