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ChemicalBook CAS DataBase List 1-CHLOROACETYL-4-(3-CHLORO-5-(TRIFLUOROMETHYL)PYRID-2-YL)PIPERAZINE

1-CHLOROACETYL-4-(3-CHLORO-5-(TRIFLUOROMETHYL)PYRID-2-YL)PIPERAZINE synthesis

2synthesis methods
-

Yield:260553-15-9 26.53 g

Reaction Conditions:

with triethylamine in ethyl acetate at 20; for 1 h;

Steps:

2.1 (1) Synthesis of intermediate IIc

Intermediate III 21.24g (0.08 mol) was added to a 250 mL single-mouth bottle.50 g of ethyl acetate and 10 g of triethylamine.Magnetic stirring, adding 9.04 g (0.08 mol) of chloroacetyl chloride.The reaction was carried out at room temperature for 1 h, and the TLC followed the reaction completely.Add water to separate the liquid, dry with anhydrous sodium sulfate,Ethyl acetate was removed by rotary evaporation.It was cooled to a white solid IIc 26.53 g.

References:

CN109336882,2019,A Location in patent:Paragraph 0034; 0035; 0036; 0037