ChemicalBook > CAS DataBase List > 4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one

4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Product Name
4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one
CAS No.
25796-77-4
Chemical Name
4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one
Synonyms
DTCO;S1370;Cyclopenta[2,1-b;]dithiophen-4-one;3,4-b']dithiophen-4-one;3,4-b']dithiophen-4-one;Cyclopenta[2,1-b:3,4-b']d;Cyclopentadithiophene ketone;Cyclopenta[1,2-b:5,4-b']dithiophen-4-one;Cyclopenta[2,1-b:3,4-b']dithiophen-4-one
CBNumber
CB42484839
Molecular Formula
C9H4OS2
Formula Weight
192.26
MOL File
25796-77-4.mol
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4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one Property

Melting point:
134.0 to 138.0 °C
Boiling point:
349.6±17.0 °C(Predicted)
Density 
1.553
storage temp. 
Keep in dark place,Sealed in dry,Room Temperature
form 
powder to crystal
color 
Orange to Amber to Dark red
InChI
InChI=1S/C9H4OS2/c10-7-5-1-3-11-8(5)9-6(7)2-4-12-9/h1-4H
InChIKey
HFIUHKXJUKKOIZ-UHFFFAOYSA-N
SMILES
C12C3SC=CC=3C(=O)C=1C=CS2
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Safety

HS Code 
2934.99.9001
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

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N-Bromosuccinimide Price

TCI Chemical
Product number
C2715
Product name
4H-Cyclopenta[1,2-b:5,4-b']dithiophen-4-one
Purity
>98.0%(GC)
Packaging
200mg
Price
$75
Updated
2025/07/31
TRC
Product number
C992283
Product name
4H-Cyclopenta[2,1-B:3,4-B'']dithiophen-4-one
Packaging
25mg
Price
$75
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
CHM0392018
Product name
CYCLOPENTA[2,1-B,3,4-B']DITHIOPHEN-4-ONE
Purity
95.00%
Packaging
5MG
Price
$504.06
Updated
2021/12/16
Matrix Scientific
Product number
093627
Product name
Cyclopenta[2,1-b:3,4-b']dithiophen-4-one
Purity
95+%
Packaging
1g
Price
$1260
Updated
2021/12/16
Biosynth Carbosynth
Product number
FC45967
Product name
4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one
Packaging
100g
Price
$4696
Updated
2021/12/16
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4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one Chemical Properties,Usage,Production

Uses

suzuki reaction

Synthesis

51751-44-1

79-44-7

25796-77-4

The general procedure for the synthesis of 4H-cyclopenta[2,1-B:3,4-B']dithiophen-4-one from 3,3'-dibromo-2,2'-bithiophene and dimethylcarbamoyl chloride was carried out as follows: 30 g of diethyl ether was added to a 250 mL three-necked flask under nitrogen protection and cooled to -70 °C by a cryogenic bath with stirring. Subsequently, 20 mL (0.05 mol, 2.5 mol/L) of hexane solution was slowly added, followed by the dropwise addition of 6.28 g (0.02 mol) of diethyl ether solution of Intermediate 1. After addition, the reaction was continued with stirring for 1 hour. Then, 2.58 g (0.024 mol) of N,N-dimethylcarbonyl chloride was added slowly and the reaction was continued with stirring for 3 hours. Upon completion of the reaction, the temperature of the reaction system was raised to 0°C and 20 g of water was added to terminate the reaction. The reaction mixture was partitioned and the organic phase was extracted with ethyl acetate. The organic phases were combined and concentrated under reduced pressure to remove the solvent to give a yellow oil. Finally, 2.88 g of light yellow liquid product was obtained in 75.1% yield by column chromatography separation and purification using petroleum ether: ethyl acetate = 20:1 (v/v) as eluent.

References

[1] Journal of Materials Chemistry A, 2017, vol. 5, # 17, p. 7811 - 7815
[2] Journal of Materials Chemistry C, 2018, vol. 6, # 3, p. 500 - 511
[3] Patent: CN108148074, 2018, A. Location in patent: Paragraph 0058; 0059; 0060
[4] Inorganic Chemistry, 2016, vol. 55, # 13, p. 6653 - 6659

4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one Preparation Products And Raw materials

Raw materials

Preparation Products

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4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one Suppliers

Americas 1 China 131 China Hong Kong 1 Europe 2 Germany 2 India 3 Japan 1 South Korea 2 United Kingdom 2 United States 10 Global 155
TopScience Biochemical
Tel
00852-68527855
Fax
00852-26406298
Email
info@itopbiochem.com
Country
China Hong Kong
ProdList
902
Advantage
58
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View Lastest Price from 4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one manufacturers

ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
Product
4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one 25796-77-4
Price
US $3.00-9.00/kg
Min. Order
1kg
Purity
99%min
Supply Ability
50kg
Release date
2025-07-29
Shaanxi Dideu Medichem Co. Ltd
Product
4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one 25796-77-4
Price
US $778.00/KG
Min. Order
1KG
Purity
98%
Supply Ability
1T
Release date
2020-06-28
Zhuozhou Wenxi import and Export Co., Ltd
Product
Cyclopenta[2,1-b;3,4-b"]dithiophen-4-one 25796-77-4
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-07-10

25796-77-4, 4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-oneRelated Search:

4H-1-BENZOPYRAN-4-ONE, 2,3-DIHYDRO-7-METHOXY- 3,4'-Dihexyl-2,2'-bithiophene

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  • DTC