272-31-1

Basic information

• Product Name: 1,2-Benzisoselenazole
• Synonyms: 1,2-Benzisoselenazole
• CAS NO: 272-31-1
• Molecular Formula: C₇H₅NSe
• Molecular Weight: 182.0813
• Mol File: 272-31-1.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 250.5±23.0 °C(Predicted)
• Appearance: /
• PKA: 4.54±0.30(Predicted)
• CAS DataBase Reference: 1,2-Benzisoselenazole(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-Benzisoselenazole(272-31-1)
• EPA Substance Registry System: 1,2-Benzisoselenazole(272-31-1)

Safety Data

• Hazardous Substances Data: 272-31-1(Hazardous Substances Data)

Upstream product

• 24852-69-5 2-(benzylselenyl)benzaldehyde 
• 6512-82-9 2-formylphenyl methyl selenide 

Relevant articles and documents

Homolytic substitution by iminyl radical at selenium: A free-radical route to 1,2-benzoselenazoles

Thiohydroxamic esters (3) derived from the O-carboxymethyl oxime derivatives (2) of 2-(benzylseleno)-benzaldehyde (1: R = H), 2-(benzylseleno)acetophenone (1: R = Me) and 2-(benzylseleno)propiophenone (1: R = Et) decompose smoothly, upon irradiation, with the loss of carbon dioxide and formaldehyde to give the 1,2-benzoselenazoles (5). The reaction presumably involves the iminyl radical intermediate (4) which undergoes intramolecular free-radical homolytic substitution at selenium to afford the product (5).