63954-14-3

Basic information

• Product Name: hexachlorodipyrido<5,4-b;3,4-d>thiophen
• Synonyms: hexachlorodipyrido<5,4-b;3,4-d>thiophen
• CAS NO: 63954-14-3
• Molecular Weight: 392.907
• Mol File: 63954-14-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: hexachlorodipyrido<5,4-b;3,4-d>thiophen(CAS DataBase Reference)
• NIST Chemistry Reference: hexachlorodipyrido<5,4-b;3,4-d>thiophen(63954-14-3)
• EPA Substance Registry System: hexachlorodipyrido<5,4-b;3,4-d>thiophen(63954-14-3)

Safety Data

• Hazardous Substances Data: 63954-14-3(Hazardous Substances Data)

Upstream product

• 39873-38-6 bis(2,3,5,6-tetrachloropyridin-4-yl)sulfane 

Relevant articles and documents

Polyhalogenoaromatic Compounds. Part 41. Photochemical Dehalogenation and Arylation Reactions of Polyhalogenoaromatic and Polyhalogenoheteroaromatic Compounds

Photolysis of pentachloro- and pentabromo-pyridine in diethyl ether or methanol leads to loss of β-halogen.A product (9) derived from attack on diethyl ether was also identified. 4-Bromotetrachloropyridine also undergoes loss of bromine and tetrachloro-4-iodopyridine loses iodine exclusively.Photodehalogenation of some perhalogenothiophens, tetrachloropyrimidine, and hexachlorobenzene is also described.Photolysis of pentachloroiodobenzene, tetrachloroiodopyridines, and trichloro-5-iodothiophen in benzene gives the corresponding polychloroaryl- or polychloroheteroaryl-benzenes.Photolysis of tetrachloro-4-(phenylthio)pyridine (3) gives 1,3,4-trichlorobenzothienopyridine (6), and the analogous perchloro(phenylthio)pyridine (37) gives the corresponding perchlorobenzothienopyridine (61).The scope of this type of photocyclisation has been explored; starting materials investigated include various arylthiopolyhalogenopyridines, some arylamino- and aryloxy-tetrachloropyridines, and 4-anilinotrichloropyrimidine.