18266-94-9

Basic information

• Product Name: CIS-1,2-DI(2-THIENYL)ETHYLENE
• Synonyms: CIS-1,2-DI(2-THIENYL)ETHYLENE;cis-1,2-Di(2-thienyl)ethylene (contains ca. 5% trans- form);(contains ca. 5% trans- forM);cis-1,2-Di(2-thienyl)ethylene
• CAS NO: 18266-94-9
• Molecular Formula: C₁₀H₈S₂
• Molecular Weight: 192.3
• Product Categories: Functional Materials;Reagents for Conducting Polymer Research;Thiophene Derivatives (for Conduting Polymer Research)
• Mol File: 18266-94-9.mol
• Article Data: 24

Chemical Properties

• Appearance: /
• Refractive Index: 1.728
• CAS DataBase Reference: CIS-1,2-DI(2-THIENYL)ETHYLENE(CAS DataBase Reference)
• NIST Chemistry Reference: CIS-1,2-DI(2-THIENYL)ETHYLENE(18266-94-9)
• EPA Substance Registry System: CIS-1,2-DI(2-THIENYL)ETHYLENE(18266-94-9)

Safety Data

• Hazardous Substances Data: 18266-94-9(Hazardous Substances Data)

Usage

General Description

CIS-1,2-DI(2-THIENYL)ETHYLENE is a chemical compound with the molecular formula C10H8S2. It is an organic compound consisting of two thiophene rings attached to a central ethylene group in a cis conformation. CIS-1,2-DI(2-THIENYL)ETHYLENE is often used in the field of organic chemistry as a building block for the synthesis of various heterocyclic compounds. It is known for its high reactivity and ability to undergo various chemical reactions, making it a valuable intermediate in the production of pharmaceuticals, agrochemicals, and other organic compounds. Additionally, CIS-1,2-DI(2-THIENYL)ETHYLENE exhibits interesting electrical, optical, and photophysical properties, making it a promising material for potential applications in the field of organic electronics and optoelectronics.

InChI:InChI=1/C10H8S2/c1-3-9(11-7-1)5-6-10-4-2-8-12-10/h1-8H/b6-5-

Upstream product

• 5919-31-3 2-(diazomethyl)thiophene 
• 36331-49-4 2-thiophenecarbaldehyde tosylhydrazone 
• 98-03-3 thiophene-2-carbaldehyde 
• 2026-42-8 diethyl thien-2-ylmethylphosphonate 
• 1918-82-7 2-vinylthiophene 
• 1271-51-8 vinyl ferrocene 
• 540-59-0 1,2-Dichloroethylene 
• 37496-13-2 2-(trimethylstannyl)thiophene 
• 23975-15-7 1,2-di(thiophen-2-yl)ethyne 
• 201230-82-2 carbon monoxide 
• 1003-09-4 2-bromothiophene 
• 2627-95-4 tetramethyldivinyldisiloxane 
• 106-99-0 buta-1,3-diene 
• 156-60-5 trans-1,2-dichloroethylene 

Downstream Products

• 1416262-95-7 benzyl 1-acetyl-4,5-di(thiophen-2-yl)-1H-pyrrole-2-carboxylate 

Relevant articles and documents

Unusual titanium-induced McMurry coupling of 4-oxo-4H-chromene-2-carbaldehydes enroute to bis-chromones

Ti/Zn-mediated McMurry coupling of a series of 4-oxo-4H-chromene-2-carbaldehydes afforded unusual chemoselective CH2-CH2tethered bis-chromones. Studying the reaction parameters and reagents further confirmed that the formation of unexpected coupled products is selective to 4-oxo-4H-chromene-2-carbaldehydes. This methodology demonstrated a simple and efficient route for the synthesis of bis-chromones.

Synthetic method A-D-A configuration organic conjugated micromolecule

The invention provides a synthesis method of A-D-A conjugated small molecules. The method comprises the following steps: (1) by using 2-formylthiophene as a raw material and using zinc powder and titanium tetrachloride as catalysts, preparing a compound (I); (2) activating the site 2 of the compound (I) by using n-butyllithium, so as to form a lithium salt intermediate; then, adding 1-bromooctane to prepare a compound (II); (3) activating the site 2 of the compound (II) by using n-butyllithium, so as to form a lithium salt intermediate; then, adding trimethyltin chloride to prepare a compound (III); (4) performing reaction by 4,7-dibromo diazosulfide and the compound (III) to prepare a compound (IV); (5) respectively connecting 2-octyl trans-terthienyl based on diazosulfide onto the two ends of R1, R2, R3 and R4 to synthesize final products of S1, S2, S3 and S4.

A process for the preparation of substituted cis

The invention belongs to the technical field of medicine and natural compound chemical intermediates and related chemistry, and relates to a preparation method of substituted cis-olefin. The method includes using alkyne and derivatives thereof as raw materials, a nanoporous gold catalyst as a catalyst, hydrogen gas as a hydrogen source and an organic alkali as a solvent, and performing selective hydrogenation to prepare cis-olefin, wherein hydrogen pressure is 0.1-20.0MPa; and molar concentration of alkyne and derivatives thereof in the solvent is 0.01-2mmol/mL. The catalyst is a nanoporous gold catalyst, the porous frame size is 5-50nm, and the molar ratio of alkyne and the derivatives thereof to the catalyst is 1:0.01-1:0.1. The method has the advantages of high product selectivity, and simple operation and post-treatment; and the catalyst is good in reproducibility, the catalytic effect is not significantly lowered after the catalyst is repeatedly used, which provides the possibility for industrialization.