42149-74-6Relevant articles and documents
Production method of 2-propoxyethyl chloride
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Paragraph 0012; 0017-0032, (2017/08/30)
The invention relates to a production method of 2-propoxyethyl chloride and belongs to the technical field of fine chemical intermediate organic synthesis. The synthesis process comprises the following steps: preparing a crude product by taking ethylene glycol monopropyl ether and excessive sulfoxide chloride as main raw materials and adopting an efficient catalyst through heating and heat preservation, wherein the reaction rate is controlled by dropwise adding sulfoxide chloride; and performing neutralization, hydrolysis, and liquid separation after standingto obtain 2-propoxyethyl chloride. Compared with the existing process, the synthesis process has the advantages that the catalyst has higher catalytic efficiency and is cheap and easily available; the technological process is simple and convenient; the catalyst used in the existing process and hydrochloric acid in the crude product form a complex easily, so that the product has precipitates and the product yield is influenced; and the crude product prepared by the catalyst is clear and transparent, the product can be obtained without water washing, the quality is stable, the product content reaches above 99.5 percent, the yield is more than 99.0 percent, the production cost is lower, and the synthesis process is particularly suitable for industrialized production.
Preparation process of 2-propoxy chloroethane
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Paragraph 0016; 0017; 0018; 0019; 0020; 0021; 0022-0031, (2017/09/02)
The invention relates to a preparation process of 2-propoxy chloroethane and belongs to the technical field of organic synthesis of fine chemical intermediates. The synthetic process comprises the following steps: by taking ethylene glycol monopropyl ether and excess thionyl chloride as raw materials and adopting a high efficiency composite catalyst, controlling the reaction rate through dropwise adding the thionyl chloride, raising the temperature and preserving the temperature to obtain a crude product, neutralizing, hydrolyzing, standing and layering to obtain the 2-propoxy chloroethane. Compared with the prior art, the preparation process disclosed by the invention has the advantages that the catalyst is higher in catalytic efficiency, low in price and easy to get; the process is simple, safe and reliable; the product is high in yield and stable in quality; the product content is up to above 99.0%; the yield is greater than 98.5%; catalysts used in the prior art easily react with little hydrochloric acid contained in the product to form complex salt which is a precipitate in the 2-propoxy chloroethane and then the product quality is influenced; and the preparation process is particularly suitable for industrial production.
Preparation method of chloroformate derivatives, and application of preparation method
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Paragraph 0106; 0108-0115; 0117-0119; 0120-0125, (2017/11/18)
The invention discloses a preparation method of chloroformate derivatives, and application of the preparation method, belonging to the field of chemical synthesis. The invention aims at providing a new preparation method, which can meet the needs of industrial production, of the chloroformate derivatives. The chloroformate derivatives prepared by the method are as shown in a formula (II) below; the method comprises the following step: enabling compounds as shown in a formula (I) to react with phosgene so as to obtain the compounds shown in the formula (II), wherein a reaction equation is shown in the description. The preparation method provided by the invention has the advantages of simple and convenient production, safety and the like; the prepared product has higher product purity and reaction yield; furthermore, the treatment of three wastes is simple and convenient; therefore, the preparation method has higher application value and wide application prospect and is worth large-scale popularization and application.
