4359-46-0

Basic information

• Product Name: 2-ethyl-4-methyl-1,3-dioxolane
• Synonyms: 2-ethyl-4-methyl-1,3-dioxolane;1,3-Dioxolane, 2-ethyl-4-methyl-;1,3-DIOXOLANE,2-ETHYL-4-METHY;Einecs 224-435-2;2-Ethyl-4-Methyl-1,3-dioxolane, cis + trans, 99%;2-Ethyl-4-methyl-1,3-dioxolane solution in acetonitrile
• CAS NO: 4359-46-0
• Molecular Formula: C₆H₁₂O₂
• Molecular Weight: 116.15828
• EINECS: 224-435-2
• Mol File: 4359-46-0.mol

Chemical Properties

• Boiling Point: 117℃
• Flash Point: 29°(84°F)
• Appearance: /
• Density: 0.904
• Refractive Index: 1.4030
• Water Solubility: Slightly soluble in water. Soluble in alcohol.
• CAS DataBase Reference: 2-ethyl-4-methyl-1,3-dioxolane(CAS DataBase Reference)
• NIST Chemistry Reference: 2-ethyl-4-methyl-1,3-dioxolane(4359-46-0)
• EPA Substance Registry System: 2-ethyl-4-methyl-1,3-dioxolane(4359-46-0)

Safety Data

• HazardClass: 3
• Hazardous Substances Data: 4359-46-0(Hazardous Substances Data)

Usage

Uses

2-Ethyl-4-methyl-1,3-dioxolane, cis + trans, is used as a flavouring agent in food industry.

InChI:InChI=1S/C6H12O2/c1-3-6-7-4-5(2)8-6/h5-6H,3-4H2,1-2H3/t5-,6+/m1/s1

Upstream product

• 57-55-6 propylene glycol 
• 123-38-6 propionaldehyde 
• 75-56-9 methyloxirane 
• 1186-52-3 tetradeuterioacetic acid 
• 110-98-5 1,1'-oxydipropan-2-ol 
• 7664-93-9 sulfuric acid 
• 4744-10-9 dimethoxypropane 
• 1874-62-0 3-ethoxy-1,2-propanediol 

Relevant articles and documents

A study on the cataluminescence of propylene oxide on FeNi layered double hydroxides/graphene oxide

In this work, FeNi layered double hydroxides/graphene oxide (FeNi LDH/GO) was prepared, which exhibits excellent selective cataluminescent performance towards propylene oxide. The selectivity and sensitivity of the cataluminescence (CTL) reaction were investigated in detail. Moreover, the catalytic reaction mechanism, including the intermediate products and the conversion of reactants to products, was discussed based on both the experimental and computational results. Furthermore, the proposed FeNi LDH/GO based CTL sensor was successfully applied for the determination of propylene oxide residue in fumigated raisins, which indicates extensive application potential for rapid food safety evaluation.

Renewable dioxolane-based gasoline-range fuels and diesel additives

A method to generate dioxolanes from renewable feedstocks, and more specifically, these oxygenated hydrocarbons can be used as gasoline-range fuels and diesel additives.

A study of the oxidehydration of 1,2-propanediol to propanoic acid with bifunctional catalysts

The gas-phase oxidehydration (ODH) of 1,2-propanediol to propionic acid has been studied as an intermediate step in the multi-step transformation of bio-sourced glycerol into methylmethacrylate. The reaction involves the dehydration of 1,2-propanediol into propionaldehyde, which occurs in the presence of acid active sites, and a second step of oxidation of the aldehyde to the carboxylic acid. The two reactions were carried out using a cascade strategy and multifunctional catalysts, made of W-Nb-O, W-V-O and W-Mo-V-O hexagonal tungsten bronzes, the same systems which are also active and selective in the ODH of glycerol into acrylic acid. Despite the similarities of reactions involved, the ODH of 1,2-propanediol turned out to be less selective than glycerol ODH, with best yield to propanoic acid no higher than 13percent, mainly because of the parallel reaction of oxidative cleavage, occurring on the reactant itself, which led to the formation of C1-C2 compounds.

INTEGRATED PROCESS FOR THE PRODUCTION OF FUEL COMPONENTS FROM GLYCERIN

The present invention relates to a versatile process for the simultaneous production of biocomponents for fuels such as gasoline and diesel, essentially starting from glycerol of biological origin only, comprising a multiplicity of interconnected steps related to hydrogenation, condensation and etherification.

PROCESS FOR THE PREPARATION OF CYCLIC ACETALS THAT CAN BE USED AS COMPONENTS FOR DIESEL FUELS

The present invention relates to a process for preparing cyclic acetals that can be used as components for diesel fuel. More specifically, the present invention relates to a process for preparing cyclic acetals having an ethereal function that can be used as diesel fuel components preferably starting from precursors of a biological origin such as, for example, starting from glycerol of a biological origin. With the process of the present invention, it is possible, for example, to prepare etherified cyclic acetals having a 1,3-dioxolane and 1,3-dioxane structure, that can be used as diesel fuel components, starting from non-etherified cyclic acetals having a 1,3-dioxolane structure, which in turn can be obtained from glycerol derivatives, in particular glycerol of a biological origin, such as 1,2-diols, for example, 1,2-propanediol.

PROCESS FOR PREPARING CYCLIC ACETALS WHICH CAN BE USED AS FUEL COMPONENTS

The present invention relates to a process for preparing cyclic acetals having general formula (I) wherein Y and Y′, equal to or different from each other, are selected from H and a group OR, R being a linear or branched alkyl containing from 1 to 8 carbon atoms, comprising at least the following phases: (i) providing a reaction mixture comprising at least one vicinal diol having formula (II) Z—CH2-CHOH—CH2OH wherein Z is selected from H and a group OR′, R′ being a linear or branched alkyl containing from 1 to 8 carbon atoms, said mixture being substantially free of aldehydes having general formula R1—CHO, wherein R1 is a linear or branched alkyl containing from 1 to 6 carbon atoms, possibly substituted by an alkoxide group OR111, wherein RIII is an alkyl containing from 1 to 4 carbon atoms; (ii) thermally treating said reaction mixture at a temperature within the range of 100° C.-300° C. in the presence of at least one acid catalyst, obtaining said compound having formula (I). The acetals having formula (I) can be used as fuel components.

Production of aldehydes from 1,2-alkanediols over silica-supported WO3 catalyst

Vapor-phase dehydration of several 1,2-alkanediols, such as 1,2-ethanediol, 1,2-propanediol, 1,2-butanediol and 1,2-pentanediol, to produce corresponding aldehydes was investigated over silica-supported WO3 catalyst, which was prepared by impregnation method and then calcined at 320?°C. Higher than 90% yield of aldehydes could be achieved over WO3/SiO2 catalyst at 250?°C with a feed of 20% aqueous 1,2-alkanediol solution. Both Br?nsted and Lewis acid sites exist on WO3/SiO2 catalyst, while Br?nsted acid sites are proposed to be the active species for the formation of aldehyde. High concentrations of H2O were effective for inhibiting the intermolecular reaction and improving the selectivity to aldehydes. The dehydration of different 1,2-alkanediols was compared under different reaction conditions. The reactivity of 1,2-ethanediol was low and the product distribution was several comparing with those of the other 1,2-alkanediols. Cyclic acetal, which was generated by the cyclodehydration of the produced aldehyde with another 1,2-alkanediol, was a main by-product, and the formation of acetal was affected by both the temperature and the carbon-chain length of the 1,2-alkanediols.

PROCESS AND APPARATUS FOR THE PRODUCTION OF ALDEHYDES STARTING FROM 1,2-DIOLS

The present invention relates to a process for preparing aliphatic aldehydes starting from 1,2-diols. Said aldehydes can be advantageously used for the synthesis of fuel components. In particular, the present invention relates to a process wherein said aldehydes can be produced starting from 1,2-diol intermediates of a biological origin. In addition, the present invention relates to an apparatus for performing said process for preparing aliphatic aldehydes starting from 1,2-diols.

preliminary aldehyde (C 2-C 10) propylene glycol acetal synthetic method (by machine translation)

The invention discloses a synthetic method of low-grade aldehyde (C2-C10) propylene glycol acetal. A target object is prepared from low-grade aldehyde (C2-C10), 1, 2-propylene glycol, anhydrous calcium chloride and p-toluenesulfonic acid which are reacted in the method. By adopting the method disclosed by the invention, the reaction is free from byproducts and pollution, the product purity and the product recovery rate are high, the cost is low, the efficiency is high and the fragrance is good. Through simple stirring reaction, the content of the acetal can reach condensation over 98%, and the method is applicable to mixing various high-grade essences and has a considerable effect of increasing the stability and temperature resistance of an essence finished-product.

METHOD OF PRODUCING ALDEHYDE AND METHOD OF PRODUCING TUNGSTEN OXIDE-CARRIER COMPOSITE

PROBLEM TO BE SOLVED: To provide a method of efficiently producing an industrially useful aldehyde. SOLUTION: An aldehyde can be efficiently produced by using a tungsten oxide-carrier composite catalyst, in which tungsten oxide and a carrier are compounded, in a reaction producing the aldehyde from a 1,2-diol. The tungsten oxide-carrier composite is obtained by burning a product, obtained by contacting a tungsten oxide precursor with the carrier, at 260-360°C for 1-500 h. COPYRIGHT: (C)2016,JPO&INPIT