38729-11-2

Basic information

• Product Name: ETHYL-D5-BENZENE
• Synonyms: ETHYLBENZENE (ETHYL-D5);ETHYL-D5-BENZENE
• CAS NO: 38729-11-2
• Molecular Formula: C₈H₁₀
• Molecular Weight: 111.2
• Product Categories: Alphabetical Listings;E-F;Stable Isotopes
• Mol File: 38729-11-2.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 136 °C(lit.)
• Appearance: /
• Density: 0.908 g/mL at 25 °C
• CAS DataBase Reference: ETHYL-D5-BENZENE(CAS DataBase Reference)
• NIST Chemistry Reference: ETHYL-D5-BENZENE(38729-11-2)
• EPA Substance Registry System: ETHYL-D5-BENZENE(38729-11-2)

Safety Data

• Hazard Codes: F,Xn
• Statements: 11-20
• Safety Statements: 16-24/25-29
• RIDADR: UN 1175 3/PG 2
• Hazardous Substances Data: 38729-11-2(Hazardous Substances Data)

Usage

Uses

Ethyl-d5-benzene (CAS# 38729-11-2) is a useful isotopically labeled research compound.

Upstream product

• 20302-26-5 d₅-ethylbenzene 
• 100-42-5 styrene 
• 98-86-2 acetophenone 
• 17537-31-4 Acetophenone-methyl-d3 

Relevant articles and documents

Separation of Closely Boiling Isomers and Identically Boiling Isotopomers via Electron-Transfer-Assisted Extraction

Mixtures of isotopomers with identical molecular weights (ethyl-d5-benzene + ethylbenzene-d5 and tert-butyl-d9-biphenyl + tert-butylbiphenyl-d9) have been partially resolved by making use of their differing solu

Photocatalytic transfer hydrogenolysis of aromatic ketones using alcohols

A mild method of photocatalytic deoxygenation of aromatic ketones to alkyl arenes was developed, which utilized alcohols as green hydrogen donors. No hydrogen evolution during this transformation suggested a mechanism of direct hydrogen transfer from alcohols. Control experiments with additives indicated the role of acid in transfer hydrogenolysis, and catalyst characterization confirmed a larger number of Lewis acidic sites on the optimal Pd/TiO2 photocatalyst. Hence, a combination of hydrogen transfer sites and acidic sites may be responsible for efficient deoxygenation without additives. The photocatalyst showed reusability and achieved selective reduction in a variety of aromatic ketones.

Synthesis of Some Deuterated Aromatic Mesomorphic Compounds Used in Broad-Line 2H-NMR Studies

Twenty-one deuterated mesogens of the following types: HOAB (perdeuterated chains), 4-alkoxybenzoic acids (perdeuterated chain and acid deuteron), 7S5 and 8S5 (perdeuterated alkoxy chain), 4-alkoxybenzylidene-4'-alkylanilines (2 or 4 deuterons in the aniline ring, 2-α-deuterons on the alkyl chain and perdeuterated alkyl or alkoxy chain) and TBBA (perdeuterated alkyl chains or anil deuterons) were prepared for use in broad-line 2H-NMR by using standard literature methods.The required 4-alkoxybenzoic acids, aldehydes and anilines with perdeuterated chains were prepared by alkylation of the appropriate 4-substituted phenol.The acid proton in the 4-alkoxybenzoic acids were replaced with a deuteron either by basic hydrolysis of the ester or acid chloride or by base-catalyzed exchange on the acid.Two deuterons were incorporated into the aniline ring ortho to the amino group by exchange in dilute H2SO4.Four ring deuterons, two α-chain deuterons or a perdeuterated chain were incorporated into 4-alkylanilines by the following sequence of steps: Friedel-Crafts acylation of benzene with an acid chloride, catalytic reduction, Friedel-Crafts acylation with oxalyl chloride, hydrolysis in base and a Schmidt rearrangement in H2SO4.New deuteration equipment was designed for the catalytic reduction using deuterium.IR NMR and MS were used to determine the deuterium content of these compounds.Small differences in mesophase transition temperatures were observed for mesogens containing perdeuterated alkyl or alkoxy chains.