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碳酸二甲酯(国产产业) Dimethyl carbonate
    公布>###:18    

1.化工消费中用作硝酸纤维素、纤维素醚、分解树脂和自然树脂的溶剂。制药土业用于制造苯巴比妥。农药产业用于制造除虫菊。仪表产业用于制造密封牢固液。剖析化学中用作化学试剂以及锂离子电池电解液身分等。还用于真空管用的特别漆的制备。别的,碳酸二乙酯照旧无机分解的紧张试剂和反响载体。

2.碳酸二乙酯是一种常用的碳酰化试剂,可用来分解酮、叔醇以及杂环化合物。别的,碳酸二乙酯也可作为碳酸硅酯以及亲核底物的烷基化试剂。

碳负离子的碳酰化 碳酸二乙酯常用于烯醇负离子的碳酰化,该反响的反响条件比力平和,产率较高。在反响历程中,可利用氢化钠、氢化钾、LDA(大概其混淆物)等作为碱。同时反响底物的选择比力普遍,大少数带有吸电子基团分子[如羰基 、氰基 、酯基和烯胺等]的α-位均可产生碳酰化。

酮、叔醇的分解 将金属无机物与碳酸二乙酯间接反响,可失掉酮或叔醇,如由咪唑分解响应酮的反响。

烷基化或烯丙基化 在得当条件下,利用钯-三苯基膦作催化剂,可完成对β-羰基酯、β-二酮、丙二酸酯、氰化物以及硝基化合物的烷基化或烯丙基化。

杂环化合物的分解 很多底物均可与碳酸二酯类化合物反响天生杂环化合物,如1,2-氨基醇与碳酸二乙酯作用可天生唑烷酮类化合物。

3.用作溶剂及用于无机分解。

 

Dimethyl carbonate (DMC) is an important organic chemical intermediate. Due to its molecular structure containing carbonyl, methyl, methoxy and carbonyl methoxyl, DMC can be widely used in organic synthesis reactions such as carbonylation, methylation, methylate and carbonyl methylation.Used in the production of polycarbonate, isocyanate, polyurethane, polycarbonate glycol, allyl diethylene glycol carbonate, methyl amino formic acid naphthalene ester (carbaryl), benzene methyl ether ammonium, four methyl alcohol, long chain alkyl carbonate, carbon hydrazide, malonic ester, propylene urethane, diethyl carbonate, three phosgene, furazolidone, hydrazine methyl formate, aniline methyl formate and other chemical products.As DMC is non-toxic, it can replace highly toxic phosgene, methyl chloroformate, dimethyl sulfate, etc. as methylating agent or carbonylating agent to improve the safety of production operation and reduce environmental pollution.As a solvent, DMC can replace freon, trichloroethane, trichloroethylene, benzene, xylene and other used in paint, cleaning solvents.As a gasoline additive, DMC can improve its octane value and oxygen content, and thus its antiknock property.DMC can also be used as an additive for detergents, surfactants and softeners.Because of its versatility, DMC is hailed as the "new cornerstone" of organic synthesis today.

 


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