5734-69-0Relevant articles and documents
Continuous synthesis method of hydroxypyrimidine compound
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Paragraph 0012; 0030-0031, (2020/07/28)
The invention discloses a continuous synthesis method of a hydroxypyrimidine compound. The method comprises the steps: carrying out continuous reaction on organic amine and a 50% cyanamide aqueous solution in a micro-reactor, introducing the reaction solution into a liquid separator for continuous phase splitting, carrying out continuous ring closing on a guanidine solution and alpha-alkyl acetoacetate in a second micro-reactor, washing the reaction solution with water, and desolventizing to obtain a target product. The method is based on the concept of green chemistry, the comprehensive costof raw materials is far lower than that of traditional methods, no salt-containing wastewater is generated, and treatment is easy; traditional solid-liquid separation is avoided, automatic productionis facilitated, and the safety and environmental protection level of the device is improved; continuous synthesis is adopted, decomposition of an intermediate is avoided, the total yield is larger than 82%, and the product content reaches 98%.
