248-70-4

Basic information

• Product Name: Benzo[b]benzo[4,5]thieno[2,3-d]thiophene
• Synonyms: Benzo[b]benzo[4,5]thieno[2,3-d]thiophene;benzthieno[3,2-b]benzothiophene;[1]benzothiolo[3,2-b][1]benzothiole
• CAS NO: 248-70-4
• Molecular Formula: C₁₄H₈S₂
• Molecular Weight: 240.34332
• EINECS: -0
• Mol File: 248-70-4.mol
• Article Data: 6

Chemical Properties

• Melting Point: 218.0 to 222.0 °C
• Boiling Point: 432.3°C at 760 mmHg
• Flash Point: 162.1°C
• Appearance: /
• Density: 1.407g/cm³
• Vapor Pressure: 2.83E-07mmHg at 25°C
• Refractive Index: 1.854
• Storage Temp.: Keep in dark place,Sealed in dry,Room Temperature
• CAS DataBase Reference: Benzo[b]benzo[4,5]thieno[2,3-d]thiophene(CAS DataBase Reference)
• NIST Chemistry Reference: Benzo[b]benzo[4,5]thieno[2,3-d]thiophene(248-70-4)
• EPA Substance Registry System: Benzo[b]benzo[4,5]thieno[2,3-d]thiophene(248-70-4)

Safety Data

• Hazardous Substances Data: 248-70-4(Hazardous Substances Data)

Usage

General Description

Benzo[b]benzo[4,5]thieno[2,3-d]thiophene is a chemical compound that belongs to the class of aromatic hydrocarbons. It has a unique fused ring structure, containing two benzene rings fused with a thiophene ring. Benzo[b]benzo[4,5]thieno[2,3-d]thiophene is used in the synthesis of various organic molecules, such as polymers, pharmaceuticals, and dyes. It possesses interesting electronic and optical properties, making it useful in the field of organic electronics and optoelectronics. Benzo[b]benzo[4,5]thieno[2,3-d]thiophene is also being studied for its potential applications in organic semiconductors and organic photovoltaics.

InChI:InChI=1/C14H8S2/c1-3-7-11-9(5-1)13-14(15-11)10-6-2-4-8-12(10)16-13/h1-8H

Upstream product

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Downstream Products

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Relevant articles and documents

Synthesis of [1]benzothiopheno[2,3-b][1]benzothiophene derivatives through iodine-mediated sulfuration reaction of 1,1-diarylethylenes

Acceleration of the reaction for the synthesis of [1]benzothiopheno[2,3-b][1]benzothiophenes (BTBTs) from 1,1-diarylethylenes was accomplished by the addition of molecular iodine. Postulated intermediates 3-arylbenzo[b]thiophenes were also selectively prepared by simply changing the amount of iodine and the reaction time.

Thiones as reactive intermediates in condensations of diketones with aromatics mediated by tetraphosphorus decasulfide

Phenanthrene-9,10-quinone and P4S10 react with phenols on being heated to give oxathiins, e.g., 9 the dioxin 22, ethers, e.g., 14 arylphenanthrenols, e.g., 10 and furanols, e.g., 17 in addition to sulfides, e.g., 26 and disulfides, e

HIGH-TEMPERATURE ORGANIC SYNTHESIS. XXII. THERMAL TRANSFORMATIONS OF EXO-CHLORINE-SUBSTITUTED TOLUENES

The gas-phase pyrolysis of exo-chlorine-substituted toluenes in an atmosphere of nitrogen or hydrogen sulfide was investigated.Hydrogen sulfide stimulates the thermolysis of benzyl chloride, accelerating the formation of toluene and stilbene at 430 deg C.The other reaction products are anthracene and bibenzyl.Similar compounds and also phenanthrene are formed during the pyrolysis of benzylidene chloride in an atmosphere of nitrogen or hydrogen sulfide (500 deg C).Benzotrichloride is distinguished by its high stability; its pyrolysis mainly with the formation of 1,2-dichloro-1,2-diphenylethylene is realized at temperatures above 550 deg C.With hydrogen sulfide it reacts at 400 deg C to form bibenzyl, stilbene, anthracene, phenanthrene, and thianaphtenothianaphthene.The latter is the main product in a recirculation-type system.