87871-33-8

Basic information

• Product Name: Ethenone, bis(2,4,6-trimethylphenyl)-
• CAS NO: 87871-33-8
• Molecular Formula: C20H22O
• Molecular Weight: 278.394
• Mol File: 87871-33-8.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: Ethenone, bis(2,4,6-trimethylphenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: Ethenone, bis(2,4,6-trimethylphenyl)-(87871-33-8)
• EPA Substance Registry System: Ethenone, bis(2,4,6-trimethylphenyl)-(87871-33-8)

Safety Data

• Hazardous Substances Data: 87871-33-8(Hazardous Substances Data)

Upstream product

• 5740-42-1 2,2-bis(2,4,6-trimethylphenyl)acetic acid 
• 110-86-1 pyridine 
• 7719-09-7 thionyl chloride 
• 71-43-2 benzene 
• 1667-01-2 2,4,6-Trimethylacetophenone 
• 22185-97-3 mesitylglyoxal 
• 20797-56-2 2,4,6-trimethylmandelic acid 
• 860571-42-2 2,4,6-trimethylphenylglyoxal hydrate 
• 108-67-8 1,3,5-trimethyl-benzene 
• 94203-61-9 dimesitylacetyl chloride 

Downstream Products

• 13158-07-1 dimesityl-acetic acid methyl ester 
• 89959-15-9 α-Methyl-β,β-dimesitylethenol 
• 77787-80-5 2,2-dimesityl-1-phenylethenol 
• 26905-20-4 trimesityl-vinyl alcohol 
• 54288-04-9 2,2-dimesityl-vinyl alcohol 
• 134359-13-0 N,N-dimethyldimesitylacetamide 
• 134335-04-9 N-ethyl-N-methyldimesitylacetamide 
• 134335-05-0 2,2-dimesityl-1-<(bisdimethylamino)phosphoryl>ethenol 
• 96040-96-9 2,2-dimesitylvinyl dimesitylacetate 
• 106359-75-5 2,2-dimesityl-1-(4-methoxyphenyl)ethenol 
• 106359-74-4 1-(4-Phenoxy-phenyl)-2,2-bis-(2,4,6-trimethyl-phenyl)-ethenol 
• 106359-77-7 1-(4-Chloro-phenyl)-2,2-bis-(2,4,6-trimethyl-phenyl)-ethenol 
• 111189-82-3 2,2-Bis-(2,4,6-trimethyl-phenyl)-1-trimethylsilanyl-ethenol 
• 128333-74-4 2,2-dimesityl-1-pentamethyldisilylethenol 

Relevant articles and documents

Hindered Tetraphenylethylene Helicates: Chiral Fluorophores with Deep-Blue Emission, Multiple-Color CPL, and Chiral Recognition Ability

New hindered tetraphenylethylene (TPE) helicates with substitution at 2,6-position of phenyl rings were designed and synthesized. Due to the increased hindrance, the TPE helicates emit strong deep-blue to violet fluorescence both in the solid state and in

Hydration of Bis(pentamethylphenyl)- and Bismesityl-ketenes leading to Ene-1,1-diols (Enols of Carboxylic Acids)

The reaction of the sterically hindered diarylketenes (Ar = Me5C6 or 2,4,6-Me3C6H2) with water is pH independent over the range 1-9 and is not subject to strong buffer catalysis.The primary products formed are the corresponding ene-1,1-diols which result from addition across the C=O (rather than the C=C) of the ketene.These "enols of carboxylic acids" are relatively long lived owing to slow protonation of the β-carbon (because of steric hindrance caused by the o-Me groups) and evidence for their structures in solution is presented.On attempted isolation of theene-1,1-diols facile oxidation to a stable free radical, as well as ketonisation to the corresponding acids, occurs.Evidence is presented in terms of the large negative entropy of activation (ca. 200 J K-1 mol-1), solvent isotope effects and the absence of significant general-base catalysis, that (despite the sterically hindered nature of these ketenes) the characteristics of their hydration are typical of other ketenes and that this most likely involves an initial concerted reaction with a water oligomer.Updated ab initio calculations are also presented, which are consistent with this view.