Highly efficient synthesis of novel bio-based pentamethylene dicarbamate via carbonylation of pentanediamine with ethyl carbamate over well-defined titanium oxide catalysts

Highly efficient synthesis of bio-based pentamethylene dicarbamate from pentanediamine and ethyl carbamate was successfully achieved over the well-defined TiO 2 catalysts, which provides a green and sustainable way for the production of bio-based isocyanates or polyurethane.