132611-66-6

Basic information

• Product Name: 5-Benzoyl-3-phenyl-5,6,7,8-tetrahydro-4H-1,3,3a,5-tetraaza-azulen-2-one
• Synonyms: 5-Benzoyl-3-phenyl-5,6,7,8-tetrahydro-4H-1,3,3a,5-tetraaza-azulen-2-one
• CAS NO: 132611-66-6
• Molecular Weight: 334.378
• Mol File: 132611-66-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 5-Benzoyl-3-phenyl-5,6,7,8-tetrahydro-4H-1,3,3a,5-tetraaza-azulen-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 5-Benzoyl-3-phenyl-5,6,7,8-tetrahydro-4H-1,3,3a,5-tetraaza-azulen-2-one(132611-66-6)
• EPA Substance Registry System: 5-Benzoyl-3-phenyl-5,6,7,8-tetrahydro-4H-1,3,3a,5-tetraaza-azulen-2-one(132611-66-6)

Safety Data

• Hazardous Substances Data: 132611-66-6(Hazardous Substances Data)

Upstream product

• 100-63-0 phenylhydrazine 
• 67452-85-1 N-Benzoyl-3-piperidinone 
• 132611-59-7 (5S,7R)-7-Benzoyl-2-phenyl-1,2,4,7-tetraaza-spiro[4.5]decan-3-one 

Relevant articles and documents

Rearrangement of 3,3-disubstituted 1-aryl-4,5-dihydro-5-oxo-3H-1,2,4-triazolium tetrafluoroborates; Part 3. An efficient synthesis of 1,5-heteroannulated 1,2-dihydro-2-phenyl-3H-1,2,4-triazol-3-ones

1-Isocyanato-1-(phenylazo)heterocycloalkanes 3a-f react with tetrafluoroboric acid to yield the respective 3-spiro-substituted 4,5-dihydro-5-oxo-1-phenyl-3H-1,2,4-triazolium tetrafluoroborates 4a-f. These compounds rearrange under ring enlargement in good yields to 1,5-heteroannulated 1,2-dihydro-2-phenyl-3H-1,2,4-triazol-3-ones 5a-f. In two special cases, 4,5-heteroannulated 2,4-dihydro-2-phenyl-3H-1,2,4-triazol-3-ones 7g,h are obtained.