METHOD OF SYNTHESIS OF 1- (2,4,6 -TRICHLOROPHENYL) -3- 2- CHLORO -5 -(OCTADECENYLSUCCINEIMI- DO)-ANILINO -4- (1- DECYL- 3,5- DIMETHYLPYRAZOLE -4-YLAZO)- PYRAZOL - INE -5- ONE

摘要

FIELD: organic chemistry. SUBSTANCE: product - 1-(2,4,6- trichlorophenyl) -3- [2-chloro -5 -(octadecenyl succineimi - do) -anilino] -4- (1- decyl -3,5- dimethylpyrazole -4-ylazo)- pyrazol - ine -5-one of the formula (image), empirical formula is БФ С₅₂H₇₂N₈Cl₄O₃, m. p. is 90-92 C, yield is 40% . Reagent 1: 1-decyl-3,5-dimethyl-4-aminopyrazole. Reagent 2: NaNO₂. Reaction conditions: in water in the presence of HCl at 0-2 C. Reagent 3: 1-(2,4,6-trichlorophenyl)-3-[2-chloro-5-octadecenylsuccineimi- do)-phenylamino]-pyrazoline-5-one. Reaction conditions: in pyridine, at 10-15 C. Product is used in negative photographic materials. EFFECT: improved method of synthesis. 2 tbl