Synthesis method for paranitrobenzoyl chloride
A technology of nitrobenzoyl chloride and p-nitrobenzoic acid, which is applied in the field of synthesis of p-nitrobenzoyl chloride, can solve the problem of not finding detailed literature on nitrobenzoyl chloride, and avoid the recovery of solvents and materials , high purity, and the effect of reducing production costs
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Embodiment 1
[0024] Add 33.5g of p-nitrobenzoic acid, 0.3g of benzyltriethylammonium chloride, and then add 95g of thionyl chloride into the reaction flask, stir evenly, heat to 80°C, and keep the temperature for 16 hours. Excessive thionyl chloride was distilled under reduced pressure to obtain 36.27g of the product, the chromatographic content was 99.84%, and the yield was 97.50%.
Embodiment 2
[0026] Add 50g of p-nitrobenzoic acid, 0.075g of benzyltriethylammonium bromide, 125g of thionyl chloride into the reaction flask, stir evenly, heat to 80°C, and keep it warm for 15 hours. After the reaction is over, evaporate excess chlorine sulfoxide, then vacuum distillation to obtain product 54.12g, the chromatographic content is 99.85%, and the yield is 97.48%.
Embodiment 3
[0028] Add 100g of p-nitrobenzoic acid, 0.1g of benzyltriethylammonium bromide, and 200g of thionyl chloride into the reaction flask, stir well, heat to 85°C, keep warm for 13 hours, and when the reaction is over, evaporate excess chlorine sulfoxide, then vacuum distillation to obtain product 109.47g, the chromatographic content is 99.74%, and the yield is 98.58%.
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