METHOD OF SYNTHESIS OF ASYMMETRICALLY SUBSTITUTED TRIAZINES Russian patent published in 1999 - IPC

FIELD: organic chemistry and chemical technology. SUBSTANCE: triazines of the formula (I) synthesized by simple procedure are valuable intermediate substances for synthesis of dyes, drugs and agents for plant protection. Invention relates to asymmetrically substituted triazines of the general formula (I) where R¹ - hydrogen, methyl or ethyl; R² and R³ mean C_1-8-alkyl, C_3-8-alkenyl, C_3-8-alkynel, C_3-8-cycloalkyl, phenyl, benzyl or phenethyl each of that can be substituted with fluorine, chlorine, phenyl, C_1-4-alkyl or C_1-4-alkoxyl that are synthesized by an interaction of quanidine derivative of the formula (II) with carboxylic acid derivative (IV) given in description where R⁴ can has any values indicated for R². Reaction is carried out in the presence of alcohol R²-OH and a base or carboxylic acid amide in the presence of salt or salt-like compound of magnesium, calcium, aluminium, zinc, copper, iron, cobalt, nickel or chrome. Method provides synthesis of triazines of the formula (I) from more available raw exhibiting less reactive capacity. Method can be carried out without isolation of intermediate compounds. EFFECT: improved and simplified method of synthesis. 13 cl, 6 ex