28237-09-4

Basic information

• Product Name: 1,8,8-triphenylheptafulvene
• Synonyms: 1,8,8-triphenylheptafulvene
• CAS NO: 28237-09-4
• Molecular Weight: 332.445
• Mol File: 28237-09-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1,8,8-triphenylheptafulvene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,8,8-triphenylheptafulvene(28237-09-4)
• EPA Substance Registry System: 1,8,8-triphenylheptafulvene(28237-09-4)

Safety Data

• Hazardous Substances Data: 28237-09-4(Hazardous Substances Data)

Upstream product

• 87268-78-8 2-trityl-5-phenyl-2H-tetrazole 
• 908093-98-1 diazodiphenylmethane 

Relevant articles and documents

Tetrazoles: XLIV. Synthesis and chemical properties of 5-substituted 2-triphenylmethyltetrazoles

Tritylation of tetrazole and its 5-substituted derivatives with triphenylmethyl chloride under conditions of phase-transfer catalysis regioselectively yields the corresponding 5-substituted 2-trityltetrazoles which can be used to protect N-H bonds in nitrogen-containing heterocycles and O-H bonds in primary alcohols. Thermolysis of 2-trityltetrazoles in benzonitrile leads to 3,6-disubstituted 1,2,4,5-tetrazines. Thermal transformation of the same compounds in dodecane follows a radically different mechanism, resulting in formation of difficultly accessible 8,8-diphenylheptafulvenes. The structure of the latter was proved by X-ray analysis.