766-15-4

Basic information

• Product Name: 4，4′-Dimethyldioxane-1，3
• Synonyms: 4，4′-Dimethyldioxane-1，3;4，4，-Dimethyl-1，3-dioxane;4,4-Dimethyl-1,3-dioxyane
• CAS NO: 766-15-4
• Molecular Formula: C₆H₁₂O₂
• Molecular Weight: 116.16
• Mol File: 766-15-4.mol
• Article Data: 7

Chemical Properties

• Boiling Point: 133.18°C (estimate)
• Flash Point: 23.8°C
• Appearance: /
• Density: 0.9548 (rough estimate)
• Vapor Pressure: 22.6mmHg at 25°C
• Refractive Index: 1.4030 (estimate)
• CAS DataBase Reference: 4，4′-Dimethyldioxane-1，3(CAS DataBase Reference)
• NIST Chemistry Reference: 4，4′-Dimethyldioxane-1，3(766-15-4)
• EPA Substance Registry System: 4，4′-Dimethyldioxane-1，3(766-15-4)

Safety Data

• Hazardous Substances Data: 766-15-4(Hazardous Substances Data)

Usage

General Description

4,4′-Dimethyldioxane-1,3, also known as 1,3-dimethyl-4,4'-dioxane, is a colorless liquid chemical compound with a molecular formula of C6H12O2. It is primarily used as a solvent in various industrial processes, including the production of pharmaceuticals, cleaning agents, and pesticides. 4,4′-Dimethyldioxane-1,3 is highly flammable and should be handled with care. It is considered to be moderately toxic and can cause irritation to the respiratory system, skin, and eyes. In addition, it is classified as a potential environmental hazard due to its persistence and ability to bioaccumulate in aquatic organisms. As a result, proper safety measures should be taken when working with this chemical, including using appropriate personal protective equipment and ensuring proper ventilation in work areas.

InChI:InChI=1/C6H12O2/c1-6(2)3-4-7-5-8-6/h3-5H2,1-2H3

Upstream product

• 50-00-0 formaldehyd 
• 115-11-7 isobutene 
• 2568-33-4 3-methyl-butane-1,3-diol 
• 67-66-3 chloroform 
• 7646-78-8 tin(IV) chloride 
• 7664-93-9 sulfuric acid 
• 75-07-0 acetaldehyde 
• 29879-84-3 2,4,4-trimethyl-1,3-dioxane 

Downstream Products

• 56539-66-3 solfit 
• 2568-33-4 3-methyl-butane-1,3-diol 
• 123-51-3 i-Amyl alcohol 
• 78-79-5 isoprene 
• 2117-34-2 triethylmethoxysilane 
• 994-49-0 hexaethyl disiloxane 
• 80920-24-7 3-methoxy-3-methyl-1-(triethylsiloxy)butane 
• 80920-25-8 triethyl-(3-methyl-but-3-enyloxy)-silane 
• 62062-85-5 2-butyl-5,6-dihydro-2,4-dimethyl-2H-pyran 
• 62062-90-2 2-Butyl-2,4-dimethyl-3,6-dihydro-2H-pyran 
• 60335-71-9 4-Methyl-2-phenyl-3,6-dihydro-2H-pyran 
• 60335-70-8 2-Phenyl-4-methyl-5,6-dihydro-2H-pyrane 
• 29879-84-3 2,4,4-trimethyl-1,3-dioxane 
• 16302-35-5 4-methyl-3,6-dihydro-2H-pyran 

Relevant articles and documents

Conversion of Isobutene and Formaldehyde to Diol using Praseodymium-Doped CeO2 Catalyst

Conversion of low-carbon olefins to higher alcohols or olefins via the formation of C-C bonds is an increasingly important topic. We herein report an example of converting isobutene and formaldehyde (38 wt % aqueous solution) to 3-methyl-1,3-butanediol (MBD), a precursor for isoprene. The reaction occurs through a Prins condensation-hydrolysis reaction over a praseodymium (Pr)-doped CeO2 catalyst. The best MBD yield (70%) is achieved over the Pr-doped CeO2 catalyst. Catalyst characterizations with high-angle annular dark field transmission electron microscopy (HAADF-TEM), pyridine adsorption infrared (IR) and Raman spectroscopy, and density functional theory (DFT) calculations show that the doped Pr is uniformly and highly dispersed in the CeO2 crystalline phase. In addition, the Pr doping creates more oxygen vacancy sites on CeO2 and thus enhances the Lewis acidity of the catalyst, which is responsible for the catalytic performance of the Pr-CeO2 catalyst. (Chemical Equation Presented).

A Lewis acid catalyst anchored on silica grafted with quaternary alkylammonium chloride moieties

Resistance to leaching and re-usability are characteristic of the novel heterogeneous Lewis acid catalyst that was prepared by anchoring tin(IV) chloride on silica grafted with tetraalkylammonium or pyridinium chloride groups. The catalyst displays high activity and selectivity in the synthesis of 3-methyl-3-buten-1-ol by the Prins condensation of isobutene with formaldehyde [Eq. (1)].

CONDENSATION OF ISOBUTENE WITH FORMALDEHYDE IN NITROMETHANE.

It is shown that condensation of isobutene with formaldehyde in nitromethane proceeds at a high rate and selectivity. The qualitative and quantitative compositions of the products formed in water and in nitromethane indicate that the reaction mechanisms in the two media are different.