112752-37-1

Upstream product

• 867133-56-0 Pentamethylmandelic acid 
• 700-12-9 pentamethylbenzene, 
• 107846-81-1 Bis-pentamethylphenyl-acetic acid 

Downstream Products

• 137122-89-5 N-(Diphenylmethyl)bis(pentamethylphenyl)acetamide 
• 137122-90-8 N-(Phenylmethyl)bis(pentamethylphenyl)ketene imine 
• 107846-87-7 bis(pentamethylphenyl)ketene dimethyl acetal 
• 146819-90-1 1,1-bis(pentamethylphenyl)-3,3-dimethyl-2-butanone 
• 112752-38-2 (1-tert-Butoxy-2,2-bis-pentamethylphenyl-vinyloxy)-trimethyl-silane 
• 112752-39-3 1-tert-Butoxy-2,2-bis-pentamethylphenyl-ethenol 
• 192432-31-8 (Bis-pentamethylphenyl-vinylidene)-isopropyl-amine 
• 139378-51-1 (Bis-pentamethylphenyl-vinylidene)-methyl-amine 
• 192432-29-4 N-Isopropyl-2,2-bis-pentamethylphenyl-acetamide 
• 146819-78-5 2,2-Bis-pentamethylphenyl-ethenol 
• 137122-88-4 N-(Phenylmethyl)bis(pentamethylphenyl)acetamide 
• 139407-36-6 N-Methyl-2,2-bis-pentamethylphenyl-acetamide 
• 112752-36-0 2,2-Bis-pentamethylphenyl-ethene-1,1-diol 
• 137122-92-0 Bis(pentamethylphenyl)acetamide 

Relevant academic research and scientific papers

Formation of hemiaminals by N-protonation of ketenimines (etheneimines) sterically hindered at carbon

The bis(pentamethylphenyl)-N-isopropyl-ketenimine [N-isopropyl-2,2-bis(pentamethylphenyl)-ethenimine] 11 undergoes pre-equilibrium N-protonation followed by water attack in 1:1 acetonitrile-water at 25°C. This is confirmed by the inverse solvent isotope e

Effect of tetra-m-bromo and tetra-m-methyl buttressing on the ground-state structures, rotational barriers, and keto enol equilibria of 2,2-dimesityl-1-r-ethenols

The stable enols (3,5-Br2-2,4,6-Me3C6)2C=C(OH)R (3a-d) and (Me5C6)2C=C(OH)R (9a-d), R = H, Me, Mes, or t-Bu, were prepared. The effect of buttressing by four m-Br or m-Me groups

Relatively Stable N-Benzhydryl- and N-Benzyldiarylketene Imines and Their Conversion to Cyanodiarylmethanes via an Isolable Radical

An efficient synthetic route to the sterically hindered ketene imines N-benzyl- and N-benzhydrylbis(pentamethylphenyl)ketene imines 8 from dipentamethylphenyl ketene 6 is described.The thermal stability of these ketene imines is in marked contrast to the

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.