1540-34-7

Basic information

• Product Name: 3-ETHYL-2,4-PENTANEDIONE
• Synonyms: 3-Ethyl-4-hydroxy-3-penten-3-one;2,4-Pentanedione, 3-ethyl-;3-Ethyl-2,4-pentanedione, mixture of tautomers 98%;3-Acetyl-2-pentanone;3-ethyl-2,4-pentanedione,mixtureoftautomers;3-ACETYLPENTAN-2-ONE;3-ACETYLPENTANONE-2;3-ETHYL-2,4-PENTANEDIONE
• CAS NO: 1540-34-7
• Molecular Formula: C₇H₁₂O₂
• Molecular Weight: 128.17
• EINECS: 216-272-0
• Product Categories: Building Blocks;C7 to C8;Carbonyl Compounds;Chemical Synthesis;Organic Building Blocks;C7 to C8;Carbonyl Compounds;Ketones
• Mol File: 1540-34-7.mol
• Article Data: 22

Chemical Properties

• Melting Point: 26.25°C (estimate)
• Boiling Point: 80-81 °C20 mm Hg(lit.)
• Flash Point: 152 °F
• Appearance: Transparent liquid 1-Bromo-3,5-dimethylbenzene
• Density: 0.953 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.0257mmHg at 25°C
• Refractive Index: n20/D 1.442(lit.)
• PKA: pK1:11.34 (25°C)
• CAS DataBase Reference: 3-ETHYL-2,4-PENTANEDIONE(CAS DataBase Reference)
• NIST Chemistry Reference: 3-ETHYL-2,4-PENTANEDIONE(1540-34-7)
• EPA Substance Registry System: 3-ETHYL-2,4-PENTANEDIONE(1540-34-7)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36/37/39
• RIDADR: 1224
• WGK Germany: 3
• Hazardous Substances Data: 1540-34-7(Hazardous Substances Data)

Usage

Chemical Properties

clear colorless to light yellow liquid

Uses

3-Ethyl-2,4-pentanedione has been used in the preparation of:N,N,N,N-tetradentate macrocyclic ligandvanadyl 3-ethylacetylacetonate, its effects in non-ketotic, streptozotocin-diabetic rats has been studied

InChI:InChI=1/C7H12O2/c1-4-7(5(2)8)6(3)9/h8H,4H2,1-3H3/b7-5+

Upstream product

• 75-03-6 ethyl iodide 
• 123-54-6 acetylacetone 
• 74-96-4 ethyl bromide 
• 74-85-1 ethene 
• 60-29-7 diethyl ether 
• 10034-85-2 hydrogen iodide 
• 7732-18-5 water 
• 64-17-5 ethanol 
• 160731-83-9 3-(Diphenylmethyl)-3-ethyl-2,4-pentandion 
• 917-54-4 methyllithium 
• 78-94-4 methyl vinyl ketone 
• 75-36-5 acetyl chloride 
• 5571-12-0 3,3-diacetylpropyl mercury chloride 
• 695-70-5 1,1-diacetylcyclopropane 

Downstream Products

• 3750-36-5 benzyl 5-(acetoxymethyl)-4-ethyl-3-methyl-1H-pyrrole-2-carboxylate 
• 7670-40-8 5,5’-bis(benzyloxycarbonyl)-3,3’-diethyl-4,4’dimethyl-2,2’-dipyrrylmethane 
• 1058163-17-9 3-phenylimino-pentan-2-one 

Relevant articles and documents

Synthesis and Thermal Behavior of Heteroleptic γ-Substituted Acetylacetonate-Alkoxides of Titanium

A series of heteroleptic titanium derivatives of general formula [Ti(OiPr)2(R-acac)2] with acetylacetonate ligands modified in the internal (γ- or 3-) position by different substituents (R=OAc, NO2, Me, Et, Cl, Br) has been synthesized and completely characterized by liquid multinuclear NMR and FTIR. The influence of the nature of the group on the thermal stability of the different complexes was studied by thermogravimetric analysis (TGA) and gave the following decreasing stability ranking: H22°-acac radical, which triggers the decomposition.

β-DIKETONE INTERACTIONS Part 5. Solvent effects on the keto enol equilibrium

The keto enol equilibrium of pentane-2,4-dione (PD) has been measured in 21 solvents at infinite dilution and a linear free energy relationship (LFER) tested againts four solvent polarity vectors: ε, ET, ?* and A + B.The best correlation coefficient is found for A +B.Similarly 3-methyl-pentane-2,4-dione (MePD) has been studied in 14 solvents and 3-ethylpentane-2,4-dione (EtPD) in six.The results suggest that the cyclic hydrogen bonding of the enol remains intact in all the solvents studied.

Chemoenzymatic Dynamic Kinetic Asymmetric Transformations of β-Hydroxyketones

Herein we report on the development and application of chemoenzymatic Dynamic Kinetic Asymmetric Transformation (DYKAT) of α-substituted β-hydroxyketones (β-HKs), using Candida antartica lipase B (CALB) as transesterification catalyst and a ruthenium complex as epimerization catalyst. An operationally simple protocol allows for an efficient preparation of highly enantiomerically enriched α-substituted β-oxoacetates. The products were obtained in yields up to 95 % with good diastereomeric ratios.

ONE-STEP, FAST, 18F-19F ISOTOPIC EXCHANGE RADIOLABELING OF DIFLUORO-DIOXABORININS AND USE OF SUCH COMPOUNDS IN TREATMENT

A compound according to Formula (I) or a pharmaceutically acceptable salt and/or solvate thereof, wherein X1 and X2 are each independently 18F or 19F; R1 and R2 are each independently alkyl, amine, perfluoroalkyl, alkenyl, alkynyl, aryl, or aralkenyl; and R3 is H, halo, alkyl, alkyl ester, alkenyl, alkynyl, aryl, or aralkenyl; or wherein: R1 and R3 or R2 and R3 join to form a 6-membered cycloalkyl or heterocyclyl; or R1 and R3, R2 and R3, or R1, R2, and R3 join to form a substituted or unsubstituted polycyclic ring, wherein the polycyclic ring comprises fused cycloalkyl, heterocycloalkyl, aryl, or heteroaryl rings.