Substitution reaction of dicyandiamide in the presence of phase transfer catalyst

【摘要】 <正> Dicyandiamide (cyanoguanidine) is widely used in the syntheses of melamine and medicines such as barbiturates and guanidine derivatives. However, the substitution reaction of dicyandiamide, particularly the tetra substitution reaction, has not been reported so far. We report here the substitution reaction of dicyandiamide in the presence of phase transfer catalyst.更多还原