25513-98-8

Basic information

• Product Name: Pyrimido[1,2-a]benzimidazole, 2,4-dimethyl- (6CI,7CI,8CI,9CI)
• Synonyms: Pyrimido[1,2-a]benzimidazole, 2,4-dimethyl- (6CI,7CI,8CI,9CI);2,4-Dimetyl primide [1,2,a]indol
• CAS NO: 25513-98-8
• Molecular Formula: C₁₂H₁₁N₃
• Molecular Weight: 197.23584
• Product Categories: BENZIMIDAZOLE;Nitrogen cyclic compounds
• Mol File: 25513-98-8.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Pyrimido[1,2-a]benzimidazole, 2,4-dimethyl- (6CI,7CI,8CI,9CI)(CAS DataBase Reference)
• NIST Chemistry Reference: Pyrimido[1,2-a]benzimidazole, 2,4-dimethyl- (6CI,7CI,8CI,9CI)(25513-98-8)
• EPA Substance Registry System: Pyrimido[1,2-a]benzimidazole, 2,4-dimethyl- (6CI,7CI,8CI,9CI)(25513-98-8)

Safety Data

• Hazardous Substances Data: 25513-98-8(Hazardous Substances Data)

Upstream product

• 53112-28-0 Pyrimethanil 

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Photocyclization of 2-(pentafluoroanilino)-, 2-(4-chloro-2-iodoanilino)-, and 2-(2-chloro-4-iodoanilino)-4,6-dimethylpyrimidines, as well as 2-(2-chloro-3-methylanilino)pyridine was used to prepare condensed azinobenzimidazoles, including previously unknown 8-chloro-1,3-dimethylpyrimido[1,2-a]benzimidazole and 9-methylpyrido[1,2-a]benzimidazole. With isomeric chloroiodoanilinopyrimidines as example it was shown that the iodine atom affects photocyclization direction. Quaternization of 6,7,8,9-tetrafluoro-1,3-dimethylpyrimido[1,2-a]benzimidazole, 8-chloro-1,3-dimethylpyrimido[1,2-a]benzimidazole, and 9-methylpyrido[1,2-a]benzimidazole with alkylating agents and C-H activity of alkyl groups in the quaternary salts in reactions with orthoformic ester were studied.