manufacturer N-OCTYL-2-PYRROLIDONE 2687-94-7

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manufacturer N-OCTYL-2-PYRROLIDONE 2687-94-7

N-syriquine ketone (NOP) is an efficient selective solvent that can be used in the recovery of organic raw materials, refining of lubricants, polymers and polymeric reactions, and is widely used in the reaction of fine chemicals such as pharmaceuticals, pesticides, pigments, flavors and cleaning agents.

preparation

The addition of 0.80 kg of 2-pyridoxane and 20.8g of ammonium tetrabutyl bromide into the reactor was 2.6% of the mass of 2-pyridoxane, and stirring was switched on The heating mixture is heated to a temperature of 85 degrees C, and the chloride positive octane is slowly added from the drop tank to the reactor, the drip-plus time is 10 hours, the chloride positive octane is added to the mass of 1.22 kg, 2- before reaction The addition of pyridoxone is about 1.146 times the amount of chlordyrifos octane moles, and under normal pressure, the controlled reaction temperature is 90 degrees C, and the stirring reaction is N-cyclopyl cartanyl (NOP).

After the reaction is completed, the crude material is imported into the distillation kettle, the pressure of the distillation kettle is controlled to -0.07Mpa, the return ratio is 3, the fraction is collected 140 to 155 degrees C, the distillation time is 2 hours, and the conversion rate is 85%. The conversion rate mainly refers to the actual yield of the product and the mass percentage of the theoretical yield obtained after the synthesis reaction. The remaining solution after distillation may choose to participate in the synthesis reaction twice, or mix with the reaction solution of the next distillation cycle for secondary distillation. Product specifications: NOP content ≥98%, moisture ≤ 1%, impurities ≤ 1%.