由二卤代烷与碱金属或碱土金属的多硫化物缩聚而成。
By two alkyl halide with alkali metal or alkaline earth metal polysulfides from condensation.
采用活泼二卤代烷与一种长链叔胺经过一步反应得到最终产物，产率较高。
Active saturated dihalide is adopted to further react with long chain tertiary amine to obtain a final product with high yield.
硫酸二甲酯是一种重要的化工原料，在有机合成中用于代替卤代烷作为甲基化剂。
Sulfuric acid dimethyl ester, one of the important chemical raw materials ACTS as the methylating agent in the organic synthesis for the purpose of replacing alkyl halide.
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