4565-32-6

Basic information

• Product Name: 2,3-Dihydrobenzo[b]thiophene
• Synonyms: 1-Thiaindan;2,3-Dihydrobenzo[b]thiophene;Benzothiophane;Benzo[b]thiophene, 2,3-dihydro-;2,3-Dihydro-1-benzothiophene
• CAS NO: 4565-32-6
• Molecular Formula: C₈H₈S
• Molecular Weight: 136.2141
• Mol File: 4565-32-6.mol
• Article Data: 25

Chemical Properties

• Melting Point: 86.5-87 °C
• Boiling Point: 219.8°Cat760mmHg
• Flash Point: 83.9°C
• Appearance: /
• Density: 1.154g/cm³
• Vapor Pressure: 0.173mmHg at 25°C
• Refractive Index: 1.629
• CAS DataBase Reference: 2,3-Dihydrobenzo[b]thiophene(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3-Dihydrobenzo[b]thiophene(4565-32-6)
• EPA Substance Registry System: 2,3-Dihydrobenzo[b]thiophene(4565-32-6)

Safety Data

• Hazardous Substances Data: 4565-32-6(Hazardous Substances Data)

Usage

Class of organic compounds

benzo[b]thiophenes

Physical state

colorless to light yellow liquid

Uses

building block in the synthesis of pharmaceuticals, agrochemicals, organic electronic materials, and dyes

Environmental concern

potential contaminant

Health hazards

known irritant to the eyes, skin, and respiratory system, requires proper handling and safety procedures.

InChI:InChI=1/C8H8S/c1-2-4-8-7(3-1)5-6-9-8/h1-4H,5-6H2

Upstream product

• 5394-13-8 2-bromo-1-benzothiophene 
• 1645-69-8 2,2,3,3-tetrafluoro-2,3-dihydrobenzothiophene 
• 95-15-8 Benzo[b]thiophene 
• 1333-74-0 hydrogen 
• 461383-67-5 S-(2-iodophenethyl) 5-azido-5-phenylpentanethioate 
• 461383-66-4 S-(2-iodophenethyl) 4-azido-4-phenylbutanethioate 
• 461383-65-3 S-(2-iodophenethyl) 4-azidobutanethioate 
• 76-63-1 allytriphenyltin 
• 461383-63-1 S-(2-iodophenethyl) 2-(azidomethyl)benzenecarbothioate 
• 24850-33-7 allyltributylstanane 
• 461383-64-2 S-(2-iodophenethyl) 2-(2-azidoethyl)benzenecarbothioate 
• 470700-03-9 5'-O-benzyl-2'-deoxy-3'-O-diethylphosphoryl-4'α-{[(2-(2-iodophenyl)ethyl)thio]carbonyl}guanosine 
• 470700-01-7 5'-O-benzyl-2'-deoxy-3'-O-diethylphosphoryl-4'α-{[(2-(2-iodophenyl)ethyl)thio]carbonyl}adenosine 
• 470699-97-9 5'-O-benzyl-2'-deoxy-3'-O-diethylphosphoryl-4'α-[(2-iodophenylethylthio)carbonyl]thymidine 

Downstream Products

• 100-41-4 ethylbenzene 
• 95-15-8 Benzo[b]thiophene 
• 64260-76-0 5-bromo-2,3-dihydrobenzo[b]thiophene 1,1-dioxide 
• 227005-28-9 CH₃C[CH₂P(C₆H₅)2]3IrH₂(C₈SH₈)⁽¹⁺⁾*B(C₆H₅)4^(1-)=CH₃C[CH₂P(C₆H₅)2]3IrH₂(C₈SH₈)B(C₆H₅)4 
• 135162-32-2 trans-dichlorobis(2,3-dihydrobenzo{b}thiophene)palladium(II) 
• 93669-99-9 ethyl 7-benzoyl-5-chloro-2,3-dihydro-1,1-dioxobenzothiophene-3-carboxylate 
• 97483-28-8 7-(4-chlorobenzoyl)-2,3-dihydrobenzothiophene-5-ylacetic acid 
• 97483-27-7 [7-(4-Chloro-benzoyl)-benzo[b]thiophen-5-yl]-acetic acid 
• 104172-31-8 (7-Benzoyl-2,3-dihydro-benzo[b]thiophen-5-yl)-acetic acid 
• 104172-32-9 (7-Benzoyl-benzo[b]thiophen-5-yl)-acetic acid 
• 26524-83-4 racemic 2,3-dihydrobenzo[b]thiophene-1-oxide 

Relevant articles and documents

Stereochemistry of Intramolecular Homolytic Substitution at the Sulphur Atom of a Chiral Sulphoxide

The formation of the cyclic sulphoxide (R)-(6) by treatment of the bromoarene (R)-(2) with tributylstannane indicates that intramolecular homolytic substitution at the sulphur centre of the sulphoxide group proceeds with strict inversion of configuration.

Competitive adsorptions between thiophenic compounds over a CoMoS/Al2O3 catalyst under deep HDS of FCC gasoline

The transformation of various model sulfur compounds (2-methylthiophene: 2MT, 3-methylthiophene: 3MT and benzothiophene: BT) representative of sulfur compounds in FCC gasoline was investigated over a CoMoS/Al2O3 catalyst. More specifically, a quantitative reactivity scale was established with BT being more reactive than 3MT and 2MT. In mixture, their reactivity was reduced due to the presence of the other sulfur compound, the scale of reactivity being preserved. BT strongly inhibits the transformation of 2MT. With a single kinetic model based on a Langmuir Hinshelwood formalism, kinetic and adsorption parameters were calculated and the results explained by mutual competitive adsorption between 2MT and BT with a higher adsorption constant for BT compared to that of 2MT.

NiMo catalysts supported on the Nb modified mesoporous SBA-15 and HMS: Effect of thioglycolic acid addition on HDS

Nb modified mesoporous SBA-15 and HMS materials were synthesized and studied as a support of NiMo. Calcined co-impregnated NiMo catalysts were prepared using ammonium heptamolybdate and nickel nitrate. Moreover, NiMo catalysts prepared in this manner were treated with thioglycolic acid (TGA). For comparison, NiMo catalysts were prepared by a simultaneous impregnation of the supports with Ni, Mo precursors and TGA. The TGA:Mo molar ratio was 4.0. The supports and NiMo catalysts were characterized by N2 physisorption, small- and wide-angle XRD, TPD-NH3, SEM, UV-vis DRS, FTIR and XPS. Catalyst activity was examined in hydrodesulfurization (HDS) reactions of 1-benzothiophene and thiophene at 350°C. It was found that simultaneous impregnation by Ni, Mo and TGA led to higher HDS activities than the sequential treatment of the calcined NiMo catalysts by TGA.