STUDY ON THE SYNTHESIS OF DIETHYL METHYL-PHOSPHONITE
Aims Glyphosate is one of the most widely used herbicide in the world,Diethyl methyl-phosphonite(DEMP)is the key intermediate for glyphosate production.Various processes are known for the manufacture of DEMP.However,the substitution reaction has many disadvantages such as low product yield and purity.Methods In order to diminish the cost of production of its relevant products,we determine using methylphosphonous dichloride(CH3PCl2),alcohol(CH3CH2OH)and sodium hydride(NaH)to give DEMP.Results The acts of raw materials ratio,reaction temperature,and other factors on the yield were tested.The results showed that the yield was 43.7%and purity was 86.6%.Its structure was characterized by GC-7980.Conclusions CH3PCl2,CH3CH2OH and NaH were used as raw materials to prepare DEMP by a simple and economical operation.The reaction condition is gentle,and cut down the cost of treating by-product.
Diethyl methyl-phosphonite methylphosphonous dichloride sodium hydride
Yangyang Jiang Dailin Li Fengkai Yan Chuanbo Dai
Institute of Petroleum and Chemical,Jilin Institute of Chemical Technology,Jilin 132022,China Production Department,Chemical Fertilizer Plant of Jilin Petrochemical Corporation,Petro Chinal,Jili
国际会议
吉林
英文
384-387
2018-06-23（万方平台首次上网日期，不代表论文的发表时间）