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1657-56-3

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1657-56-3 Usage

General Description

4,4'-DICHLORO-TRANS-STILBENE is a chemical compound with the formula C14H10Cl2. It is a derivative of stilbene, containing two chlorine atoms in the 4 and 4' positions of the phenyl rings. 4,4'-DICHLORO-TRANS-STILBENE is commonly used as a building block for a variety of organic compounds and pharmaceuticals due to its potential for exhibiting biological activity. 4,4'-DICHLORO-TRANS-STILBENE is also known for its photophysical properties, making it a valuable material for optical applications. Additionally, it has been studied for its potential as a fluorescent probe for studying protein-ligand interactions. Overall, 4,4'-DICHLORO-TRANS-STILBENE is a versatile chemical with potential applications in various fields including pharmaceuticals and materials science.

Check Digit Verification of cas no

The CAS Registry Mumber 1657-56-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,5 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1657-56:
(6*1)+(5*6)+(4*5)+(3*7)+(2*5)+(1*6)=93
93 % 10 = 3
So 1657-56-3 is a valid CAS Registry Number.

1657-56-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017

1.Identification

1.1 GHS Product identifier

Product name 4,4'-DICHLORO-TRANS-STILBENE

1.2 Other means of identification

Product number -
Other names Benzene, 1,1‘-(1,2-ethenediyl)bis[4-chloro-, (E)-

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:1657-56-3 SDS

1657-56-3Relevant articles and documents

Efficient preparation method of symmetric diarylethene compound

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Paragraph 0047-0049; 0053-0055, (2021/02/10)

The invention belongs to the technical field of fine chemicals and related chemistry, and provides an efficient preparation method of a symmetric diarylethene compound. The method comprises the following steps: with halomethyl-containing aromatic hydrocarbon and derivatives thereof as raw materials, conducting reacting at 100 DEG C for 12 hours in the presence of a catalyst, alkali, additives andan anhydrous organic solvent so as to obtain the corresponding diarylethene compound with symmetry. The method has the beneficial effects that no transition metal reaction exists, reaction conditionsare mild, operation is simple and convenient, the possibility of industrialization is realized, and the diarylethene compound is obtained at high yield; and the diarylethene compound synthesized by using the method can be further functionalized to obtain various compounds, and is applied to development and research of natural products, functional materials and fine chemicals.

Selenenate Anions (PhSeO?) as Organocatalyst: Synthesis of trans-Stilbenes and a PPV Derivative

Zheng, Zhipeng,Trofymchuk, Oleksandra S.,Kurogi, Takashi,Varela, Elena,Mindiola, Daniel J.,Walsh, Patrick J.

supporting information, p. 659 - 666 (2020/01/02)

The selenenate anion (RSeO?) is introduced as an active organocatalyst for the dehydrohalogen coupling of benzyl halides to form trans-stilbenes. It is shown that RSeO? is a more reactive catalyst than the previously reported sulfur analogues (sulfenate anion, RSO?) and selenolate anions (RSe?) in the aforementioned reaction. This catalytic system was also applied to the benzylic-chloromethyl-coupling polymerization (BCCP) of a bis-chloromethyl arene to form ppv (poly(p-phenylene vinylene))-type polymers with high yields, Mn (average molecular weight) up to 13,000 and ? (dispersity) of 1.15. (Figure presented.).

Diarylethene synthesis method without transition metal catalysis

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Paragraph 0046-0050, (2019/02/06)

The invention discloses a diarylethene synthesis method without transition metal catalysis. The method comprises the following steps: a cinnamic acid derivative and aryl trifluoroborate are subjectedto a decarboxylation coupling reaction in a solvent under the action of an oxidizing agent, postprocessing is performed after the reaction, and diarylethene is obtained. K2S2O8 is adopted to promote acatalytic system in the synthetic method, and a free radical coupling reaction can be performed directly under the condition that no ligand, transition metal or alkali is added. The method has widersubstrate range and higher yield; the method is simple to operate, reaction conditions are mild, and large-scale application is facilitated.

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