1422259-90-2

Basic information

• Product Name: 3-bromo-7H-cyclopenta[1,2-b:3,4-c']-dithiophen-7-one
• CAS NO: 1422259-90-2
• Molecular Weight: 271.158
• Mol File: 1422259-90-2.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 3-bromo-7H-cyclopenta[1,2-b:3,4-c']-dithiophen-7-one(CAS DataBase Reference)
• NIST Chemistry Reference: 3-bromo-7H-cyclopenta[1,2-b:3,4-c']-dithiophen-7-one(1422259-90-2)
• EPA Substance Registry System: 3-bromo-7H-cyclopenta[1,2-b:3,4-c']-dithiophen-7-one(1422259-90-2)

Safety Data

• Hazardous Substances Data: 1422259-90-2(Hazardous Substances Data)

Upstream product

• 5556-13-8 4,4′-dibromo-3,3′-bithiophene 
• 79-44-7 N,N-Dimethylcarbamoyl chloride 

Relevant articles and documents

Asymmetric b thiopheneglyoxylic and fragrant heterocyclic the synthetic method of the compound of

The invention discloses a synthesis method of asymmetrical beta-bromodithieno heteroaromatic compounds, which comprises the following steps: reacting 4,4'-dibromo-3,3'-bithiophene used as a raw material and n-butyl lithium in anhydrous ethyl ether; then performing cyclization reaction under the action of different cyclization reagents (bis(benzenesulfonyl)thioether, N,N-dimethylformyl chloride and dimethyl dichlorosilane); and finally, performing water quenching to generate the asymmetrical beta-bromodithieno heteroaromatic compounds and symmetrical dithieno heteroaromatic compounds, wherein the asymmetrical beta-bromodithieno heteroaromatic compounds and a small amount of symmetrical dithieno heteroaromatic compounds are selectively obtained at a high yield in the presence of the n-butyl lithium; the asymmetrical beta-bromodithieno heteroaromatic compounds include 3-bromo-dithieno[2,3-b:3',4'-d]thiophene, 3-bromo-7H-cyclopentano[1,2-b:3,4-c']dithiophene-7-one and 3-bromo-7,7-dimethyl-7H-dithieno[2,3-b:3',4'-d]silole; and the symmetrical dithieno heteroaromatic compounds include dithieno[3,4-b:3',4'-d]thiophene, 7H-cyclopentano[1,2-c:3,4-c']dithiophene-7-one and 4,4-dimethyl-4H-dithieno[3,4-b:3',4'-d]silole. The synthesis process disclosed by the invention is operable, and the reaction condition is involved with a water-free, oxygen-free and low-temperature condition, thus ensuring that the invention is suitable for laboratory-scale preparation.