2938-98-9

Basic information

• Product Name: 2-methylbutane-1,4-diol
• Synonyms: 2-methylbutane-1,4-diol;1,4-Butanediol, 2-methyl-;2-Methyl-1,4-butanediol;2-methyl-4-butanediol;NSC 91489
• CAS NO: 2938-98-9
• Molecular Formula: C₅H₁₂O₂
• Molecular Weight: 104.14758
• EINECS: 220-925-5
• Mol File: 2938-98-9.mol
• Article Data: 59

Chemical Properties

• Melting Point: 50.86°C (estimate)
• Boiling Point: 126-127℃
• Flash Point: 98.9±13.0℃
• Appearance: /
• Density: 1.4497 g/cm3 (20 ºC)
• Vapor Pressure: 0.0392mmHg at 25°C
• Refractive Index: 1.45 (589.3 nm 18℃)
• Storage Temp.: Refrigerator
• Solubility: Chloroform (Slightly)
• PKA: 14.91±0.10(Predicted)
• Stability: Unstable in Aqueous Solution
• CAS DataBase Reference: 2-methylbutane-1,4-diol(CAS DataBase Reference)
• NIST Chemistry Reference: 2-methylbutane-1,4-diol(2938-98-9)
• EPA Substance Registry System: 2-methylbutane-1,4-diol(2938-98-9)

Safety Data

• Hazardous Substances Data: 2938-98-9(Hazardous Substances Data)

Usage

General Description

2-methylbutane-1,4-diol is a chemical compound with the molecular formula C5H12O2. It is also known as tetramethylene glycol or 2,3-dihydroxy-2-methylbutane. 2-methylbutane-1,4-diol is a colorless, odorless liquid at room temperature and is commonly used as a solvent and as a building block in the synthesis of other chemicals. It has two hydroxyl groups, making it a diol, and the methyl group is located on the second carbon atom in the chain. 2-methylbutane-1,4-diol is used in various industries, including pharmaceuticals, cosmetics, and chemical manufacturing. It is important to handle this chemical with care, as it can be hazardous if not properly managed.

InChI:InChI=1/C5H12O2/c1-5(4-7)2-3-6/h5-7H,2-4H2,1H3

Upstream product

• 53627-41-1 (E)-2-methyl but-2-ene-1,4-diol 
• 4676-51-1 Diethyl 2-methylsuccinate 
• 54462-66-7 1,4-dibromo-2-methyl-butane 
• 21307-96-0 methyl 2-methylsuccinate 
• 759-65-9 diethyl oxalpropionate 
• 40560-13-2 (2Z)-2-methylbut-2-ene-1,4-diol 
• 201230-82-2 carbon monoxide 
• 513-42-8 3-hydroxy-2-methyl-1-propene 
• 106162-48-5 1-methyl-1-(trimethylsilyl)methylcyclopropane 
• 130279-55-9 Phosphorous acid diethyl ester 3-methyl-4-oxo-butyl ester 
• 90106-98-2 Bromomethyl-dimethyl-(2-methyl-allyloxy)-silane 
• 4100-80-5 2-methylsuccinic anhydride 
• 627-27-0 homoalylic alcohol 
• 22122-36-7 3-methyl-5H-furan-2-one 

Downstream Products

• 13423-15-9 3-methyltetrahydrofuran 
• 54462-66-7 1,4-dibromo-2-methyl-butane 
• 51814-03-0 1,4-diacetoxy-2-methyl-butane 
• 2938-98-9 (R)-2-methylbutane-1,4-diol 
• 64190-48-3 dihydro-4-methyl-2(3H)-furanone 
• 1679-47-6 3-methyltetrahydro-2-furanone 
• 95753-86-9 (R,S)-2-methylbutane-1,4-diol dibenzoate 
• 120329-64-8 (R)-2-methylbutane-1,4-diol dibenzoate 
• 498-21-5 2-methylbutanedioic acid 
• 281214-26-4 (R)-2-methylbutane-1,4-diyl bis(4-methylbenzenesulfonate) 
• 213740-15-9 (2R)-4-[1-(tert-butyl)-1,1-diphenylsilyl]oxy-2-methylbutan-1-ol 

Relevant articles and documents

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Hydroformylation reaction ligand, hydroformylation catalyst and diol preparation method

The invention discloses a hydroformylation reaction ligand, a hydroformylation catalyst and a diol preparation method According to the invention, the structural formula of the hydroformylation reaction ligand is shown in the specification, wherein R1 and R2 are mutually independent one of H, aryl or substituted aryl, thienyl, pyrrolyl, thiazolyl, imidazolyl and pyridyl; the ligand disclosed by the invention is high in catalytic activity and good in metal active center stability, by-products of aldehyde in a conventional hydroformylation reaction can be reduced, and linear diol with a high normal/isomer ratio can be obtained by a one-step method; and the method has the advantages of simple and convenient process, low cost and energy consumption, good production safety, high product quality and the like, and is particularly suitable for large-scale industrial production.

METHOD FOR PRODUCING ALCOHOL

PROBLEM TO BE SOLVED: To provide a method for producing selectively alcohol from carboxylic acid under mild conditions. SOLUTION: In the presence of a catalyst with M1 and M2 as metal species supported on a support, a substrate is reduced to produce a corresponding alcohol. (M1 is Rh, Pt, Ru, Ir, or Pd; M2 is Sn, V, Mo, W, or Re; the support is ZrO2, hydroxyapatite, Nb2O5, fluoroapatite, or hydrotalcite; the substrate is the formula 1a, 1b, or 1c). SELECTED DRAWING: None COPYRIGHT: (C)2020,JPO&INPIT

A Diaminopropane Diolefin Ru(0) Complex Catalyzes Hydrogenation and Dehydrogenation Reactions

New ruthenium (0) complexes with a cooperative diolefin diaminopropane (DAP) or the dehydrogenated iminopropenamide ligand (IPA) were synthesized for comparison with their diaminoethane (DAE)/ diazadiene (DAD) ruthenium analogues. These DAP/IPA complexes are efficient catalysts in dehydrogenation reactions of alkaline aqueous methanol which proceeds under mild conditions (T=70 °C) and of higher alcohols, forming the corresponding carbonate and carboxylates, respectively. The scope of the reaction includes an example of a 1,2-diol as model for biomass derived alcohols. Their catalytic applications are extended to the atom-efficient dehydrogenative coupling of alcohols and amines to amides. The reaction proceeds without any additives and is applicable to the synthesis of formamides from methanol. Moreover, DAP/IPA complexes catalyze the hydrogenation of a series of esters, lactone, ketone, activated olefin, aldehyde and imine substrates. The diaminopropane Ru catalyst exhibits higher activity compared to the dehydrogenated β-ketiminate (IPA) and previously studied DAD/DAE based catalysts. We present studies on their stoichiometric reactivity with relevance to their possible catalytic mechanisms and the isolation and full characterization of key reaction intermediates.