82939-56-8

Basic information

• Product Name: 7b-methyl-7bH-cyclopentindene-5-carbaldehyde
• CAS NO: 82939-56-8
• Molecular Weight: 182.222
• Mol File: 82939-56-8.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 7b-methyl-7bH-cyclopentindene-5-carbaldehyde(CAS DataBase Reference)
• NIST Chemistry Reference: 7b-methyl-7bH-cyclopentindene-5-carbaldehyde(82939-56-8)
• EPA Substance Registry System: 7b-methyl-7bH-cyclopentindene-5-carbaldehyde(82939-56-8)

Safety Data

• Hazardous Substances Data: 82939-56-8(Hazardous Substances Data)

Upstream product

• 5312-73-2 dichloromethyl n-butyl ether 
• 79644-47-6 7b-methyl-7bH-cyclopentindene 

Relevant articles and documents

Tricyclic annulenes. Part 3. Reactions of 7b-Methyl-7bH-cyclopentindene

The chemical reactions of the tricyclic annulene (1) are described.The annulene is rapidly hydrogenated to give the fully saturated hydrocarbon (2).It undergoes a substitution reaction with electrophiles and has been nitrated, acetylated, formylated, and sulphonated.The preferential sites of attack of electrophiles are C-5 and C-1.Although the annulene (1) does not undergo cycloaddition reaction with tetracyanoethylene, dimethyl acetylenedicarboxylate, or benzyne, it does react with 4-phenyl-1,2,4-triazole-3,5-dione in refluxing 1,2-dimethoxyethane to give the 2:1 adduct (17) and with chlorosulphonyl isocyanate to give the ring-expanded indenoazepine (19).Hydrolysis of (19) gives the amide (20), which shows some antiaromatic character.