7580-85-0Relevant articles and documents
Method for synthesizing ethylene glycol monobutyl ether in alkaline ionic liquid (by machine translation)
-
Paragraph 0023-0040, (2020/03/05)
The invention relates to a method, for synthesizing ethylene glycol monobutyl ether from basic ionic liquid by using a basic ionic liquid as a catalyst and a solvent to catalyze tert-butyl alcohol to react with ethylene oxide to prepare ethylene glycol mont-butyl ether, and the preparation method has the yield of more than, purity greater than 93%, and the process simple 99%, suitable for industrial production . (by machine translation)
Ethylene glycol mono-tert-butyl ether preparation method
-
Paragraph 0021-0045, (2020/02/14)
The invention relates to an ethylene glycol mono-tert-butyl ether preparation method. According to the invention, K-MgO/gamma-aluminum oxide is selected as a catalyst, tert-butyl alcohol and ethyleneoxide are adopted as reaction raw materials, an ethylene glycol monotert-butyl ether preparation method suitable for industrial production is provided, the yield of the preparation method is larger than 95%, the purity of the product is larger than 99%, the process is simple, and the preparation method meets the requirement of industrial production.
METHOD FOR PRODUCING ASYMMETRIC ALKYL ETHER HAVING TERTIARY ALKYL GROUP
-
Paragraph 0042, (2017/01/31)
PROBLEM TO BE SOLVED: To provide a method capable of obtaining an asymmetric alkyl ether having a tertiary alkyl group easily and industrially. SOLUTION: (1) There is provided a method for producing an asymmetric alkyl ether having a tertiary alkyl group by subjecting a tertiary alcohol and a primary alcohol or a secondary alcohol to a dehydration reaction using activated clay as a catalyst. (2) There is provided the method for producing an asymmetric alkyl ether having a tertiary alkyl group according to (1), where the tertiary alcohol is any one selected from the group consisting of tert-butanol, tert-amylalcohol and 1-adamantyl alcohol. SELECTED DRAWING: None COPYRIGHT: (C)2016,JPOandINPIT
PROCESS FOR PREPARING AN ALKOXYLATED ALCOHOL OR PHENOL
-
Page/Page column 19-20, (2008/06/13)
Process for preparing an alkoxylated alcohol comprising reacting a starting monohydroxy alcohol selected from secondary alcohols, tertiary alcohols and mixtures thereof with an alkylene oxide in the presence of hydrogen fluoride and a boron-containing compound comprising at least one B-O bond. The alcohol may also be a primary monohydroxy alcohol when the boron containing compound is boric acid or boric acid anhydride or a mixture thereof, or may be a primary mono hydroxy alcohol, except a C14/C15 alcohol when reacted with ethylene oxide in the presence of HF and trimethyl borate. A phenol may be alkoxylated in the same way instead of the mono-hydroxyalcohol.
Synthesis of low molecular weight glycol ethers from oxiranes plus olefins
-
, (2008/06/13)
Disclosed is a process for preparation of monoalkyl ethers by reacting low molecular weight olefins and the corresponding oxiranes, in the presence of a catalyst comprising an acidic heterogeneous or homogeneous catalyst, generally represented by the equation: STR1 where R, R', R may be hydrogen or an alkyl radical.
Synthesis of low molecular weight ethylene propylene glycol ethers via olefin addition to the corresponding glycol
-
, (2008/06/13)
A selective process for the synthesis of ethers of polyols involves reacting an olefin and a polyol in the presence of a heteropoly acid catalyst at a temperature of 25 to 200oC and a pressure of up to 7MPa.
Influence of the reaction temperature on some acid-catalized processes of 6-hydroxy-4-oxa-alkanal derivatives and related products. Ring contraction in 5-alkoxy-1,4-dioxepanes
Espinosa, Antonio,Gallo, A. Miguel,Campos, Joaquin,Entrena, Antonio
, p. 379 - 383 (2007/10/02)
The qualitative effect of the reaction temperature on some acid-catalized processes carried out on 6-hydroxy-4-oxa-alkanal derivatives may be rationalized by means of two simultaneous or competitive pathways which involve intermediates such as 5-alkoxy-1,4-dioxepane derivatives or vinyl dioxolanes.We describe herein an acid catalyzed contraction of the 5-isopropoxy-1,4-dioxepane ring in dioxane and different alcohol interchange reactions with 5-alkoxy-1,4-dioxepanes that also occur with ring contraction when the reaction temperature is 60 deg C or higher.The transacetalization reactions between 6-hydroxy-4-oxa-hexal ethylene acetal and 6-hydroxy-4-oxa-heptanal 1,2-propylene acetal and tert-butanol, carried out at the reflux of the reacting mixtures are also described.The results obtained suggest 2-vinyl-1,3-dioxolanes as reactive intermediates.In order to prove this hypothesis the reaction between 2-vinyl-1,3-dioxolane and tert-butanol at reflux has been stuied.It leads to the same reaction products.
The Kinetics of the Halcon Reaction
Megdiche, R.,Schnurpfeil, D.
, p. 113 - 122 (2007/10/02)
We have investigated the influence of all types of reaction products on the rate of the Halcon reaction.The experiments show that the retarding effect of epoxide is higher than that of the alcohol.Furthermore we have found that the consecutive products of the epoxide retard the Halcon reaction more than the primary reaction products.The reaction rate can be described by an equation of the Michaelis-Menten-type.We determined the initial reaction rate in dependence on the starting concentration of the reaction products.