苯磷硫胺的合成与精制
Chemical Industry Times(2016)
Abstract
以维生素B1为起始原料,进行酯化反应得到多磷酸聚合物,再用盐酸进行水解,两步反应合成苯磷硫胺粗品。利用酸溶碱沉淀的方法将产品析出精制。优化后的工艺成本低廉、后处理简单、产品纯度高、收率高,并且对环境污染小。纯度可达99.3%,三步反应总收率45%。
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