| Abstract: | The reaction of nitrolignin with ammonia has been studied. It has been established that it takes place mainly through the carbonyl and carboxy groups of the lignin. A dark brown product with a high nitrogen content readily soluble in water and exhibiting biological activity was obtained. On the basis of the results of elementary and functional analyses, a semiempirical formula has been calculated for the substance obtained, and its viscosity and electrical conductivity have been determined. The molecular weight, determined by the sedimentation method in an ultracentrifuge, was more than 60,000. It was established by gel chromatography that the product of the interaction of nitrolignin with ammonia was polydisperse.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, Vol. 5, pp. 827–829, November–December, 1985. |
