90057-08-2Relevant articles and documents
Preparation method for catalyzing pyrimidine cyclic hydroxyl chlorination by tetraethylammonium chloride
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Paragraph 0034-0036, (2020/04/17)
The invention discloses a preparation method for catalyzing pyrimidine cyclic hydroxyl chlorination by tetraethylammonium chloride, which comprises the following steps: (1) adding phosphorus oxychloride into a container, adding tetraethylammonium chloride as a catalyst, adding a pyrimidine cyclic hydroxyl compound, and heating to react; (2) preparing an alkali liquor, cooling to 0 DEG C, and slowly dropwise adding an obtained reaction liquid into the alkali liquor for quenching to obtain a target product. The method has the advantages that the provided pyrimidine cyclic hydroxyl chlorination catalysis method is small in environmental pollution, the obtained product is light in color, the catalysis efficiency is high, and the phosphorus oxychloride recovery pressure is small.