107846-81-1

Basic information

• Product Name: Benzeneacetic acid, 2,3,4,5,6-pentamethyl-a-(pentamethylphenyl)-
• CAS NO: 107846-81-1
• Molecular Formula: C24H32O2
• Molecular Weight: 352.517
• Mol File: 107846-81-1.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: Benzeneacetic acid, 2,3,4,5,6-pentamethyl-a-(pentamethylphenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzeneacetic acid, 2,3,4,5,6-pentamethyl-a-(pentamethylphenyl)-(107846-81-1)
• EPA Substance Registry System: Benzeneacetic acid, 2,3,4,5,6-pentamethyl-a-(pentamethylphenyl)-(107846-81-1)

Safety Data

• Hazardous Substances Data: 107846-81-1(Hazardous Substances Data)

Upstream product

• 700-12-9 pentamethylbenzene, 
• 563-96-2 2,2-dihydroxyacetic acid 
• 112752-36-0 2,2-Bis-pentamethylphenyl-ethene-1,1-diol 
• 192432-31-8 (Bis-pentamethylphenyl-vinylidene)-isopropyl-amine 
• 298-12-4 Glyoxilic acid 
• 594-19-4 tert.-butyl lithium 
• 112752-37-1 bis(pentamethylphenyl)ketene 
• 917-54-4 methyllithium 
• 867133-56-0 Pentamethylmandelic acid 

Downstream Products

• 137122-88-4 N-(Phenylmethyl)bis(pentamethylphenyl)acetamide 
• 137122-90-8 N-(Phenylmethyl)bis(pentamethylphenyl)ketene imine 
• 146819-78-5 2,2-Bis-pentamethylphenyl-ethenol 
• 146819-81-0 1,1-bis(pentamethylphenyl)-3,3-dimethyl-1-buten-2-ol 
• 146819-90-1 1,1-bis(pentamethylphenyl)-3,3-dimethyl-2-butanone 
• 112752-36-0 2,2-Bis-pentamethylphenyl-ethene-1,1-diol 
• 192432-29-4 N-Isopropyl-2,2-bis-pentamethylphenyl-acetamide 
• 192432-31-8 (Bis-pentamethylphenyl-vinylidene)-isopropyl-amine 
• 139407-36-6 N-Methyl-2,2-bis-pentamethylphenyl-acetamide 
• 139378-51-1 (Bis-pentamethylphenyl-vinylidene)-methyl-amine 
• 112752-37-1 bis(pentamethylphenyl)ketene 

Relevant articles and documents

Sterically hindered enols of carboxylic acids and esters. the ketonisation reactions of 2,2-bis(2,4,6-trimethylphenyl)ethene-1,1-diol and 2,2-bis(pentamethylphenyl)ethene-1,1-diol

The ketonisation of two enols of carboxylic acids, 2,2-bis(2,4,6-trimethylphenyl)ethene-1,1-diol 2a and 2,2-bis(pentamethylphenyl)ethene-1,1-diol 2b have been studied at 25°C in 1:1 acetonitrile-water. The stability of these compounds arises from the inhibition of the β-carbon site to protonation, and this effect is now quantified. A pKa of 8.18 is reported for ionisation of the first hydroxyl group Of(MeS)2C=C(OH)2 2a and 8.63 for (PMP)2C=C(OH)2 2b. A pH-rate profile has been determined over the full pH range for both species. General acid catalysis was detected, yielding Bronsted a values of 0.35 and 0.34 for 2a and 2b, respectively. Similarly, Bronsted a'′ values of 0.48 and 0.45 were calculated for general acid catalysis of both enolate mono-anions. Studies of the ketonisation of the enols of the corresponding methyl esters have permitted comparative studies on the reactivity of enols of carboxylic acids, esters and ketene acetals. The reactivity of MeS2C=C(OH)(OCH3) lies closer to the enediol, MeS2C=C(OH)2 2a than to the ketene acetal, suggesting that in this case, one hydroxy group is almost as efficient as two such groups in the stabilisation of the positive charge developing at Cβ as protonation occurs.

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

Regiospecific Reactions of the Ambident Anion of Bis(pentamethylphenyl)acetonitrile

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