88830-20-0

Basic information

• Product Name: 1,2,4-Benzenetricarbonitrile, 5-methyl-
• CAS NO: 88830-20-0
• Molecular Formula: C10H5N3
• Molecular Weight: 167.17
• Mol File: 88830-20-0.mol
• Article Data: 8

Chemical Properties

• CAS DataBase Reference: 1,2,4-Benzenetricarbonitrile, 5-methyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2,4-Benzenetricarbonitrile, 5-methyl-(88830-20-0)
• EPA Substance Registry System: 1,2,4-Benzenetricarbonitrile, 5-methyl-(88830-20-0)

Safety Data

• Hazardous Substances Data: 88830-20-0(Hazardous Substances Data)

Upstream product

• 2916-31-6 2,2-dimethyl-1,3-dioxolane 
• 712-74-3 1,2,4,5-tetracyanobenzene 
• 1450-14-2 1,1,1,2,2,2-hexamethyldisilane 
• 107-46-0 Hexamethyldisiloxane 
• 10347-14-5 2-cyano-1,4-benzenedicarbonitrile 
• 75-05-8 acetonitrile 
• 67-56-1 methanol 
• 540-88-5 acetic acid tert-butyl ester 
• 3674-77-9 2-methyl-2-phenyl-1,3-dioxolane 
• 292638-85-8 acrylic acid methyl ester 
• 107-13-1 acrylonitrile 
• 78-94-4 methyl vinyl ketone 
• 624-48-6 dimethyl cis-but-2-ene-1,4-dioate 
• 64-19-7 acetic acid 

Relevant articles and documents

Limits to oxidation of organic substrates. SET oxidative processes of commonly used solvents as revealed through the photochemical reaction with 1,2,4,5-benzenetetracarbonitrile

The chemical reactivity upon single electron transfer of some common solvents has been explored. This has been obtained by using photo excited benzene-1,2,4,5-tetracarbonitrile (TCB) as the oxidant. Under this condition acetonitrile, isobutyronitrile, methanol and trifluoroethanol all undergo α-deprotonation from their radical cations giving alkyl radicals which are trapped by TCB-· and yield alkylbenzenetricarbonitriles or products derived from them. The reaction of the two aliphatic nitriles occurs only in the presence of protic additives, and is accompanied by a different fragmentation leading to methyl (or respectively isopropyl) radicals. Trifluoroacetic acid decarboxylates, probably via oxidation of the anion. TCB irradiation in neat methanol (rather than in MeOH-MeCN mixtures) leads to protic addition onto the cyano group, finally giving dicyanoindoles.

Radicals through Photoinduced Electron Transfer. Addition to Olefin and Addition to Olefin-Aromatic Substitution Reactions

The radical cations of 2,2-dialkyl- and 2-alkyl-2-aryl-1,3-dioxolanes, when generated in solution by photoinduced electron transfer to 1,2,4,5-benzenetetracarbonitrile (TCB), fragment to yield alkyl radicals.These are trapped by electron-withdrawing substituted alkenes (acrylonitrile, methyl acrylate, methyl vinyl ketone, as well as dimethyl maleate and fumarate).The radicals thus formed are either reduced by the TCB radical anion or add to it.In the first process (observed only with the diesters) the end result is reductive alkylation of the olefin, while the latter process results in an addition to the olefin-aromatic substitution reaction.The selectivity of the process is explained on the basis of steric hindrance, since the radicals react when still in the cage with the aromatic radical anion.

Electron-donating Behaviour of Aliphatic Carboxylic Acids in the Photoreaction with 1,2,4,5-Tetracyanobenzene

Irradiation of an acetonitrile solution of 1,2,4,5-tetracyanobenzene with aliphatic carboxylic acids gives 2,4,5-tricyanoalkylbenzenes efficiently; electron transfer from the carboxylic acids to the excited tetracyanobenzene is essential.