Corrosion-protecting properties of products of pyridine quaternization with chloromethylated benzyltoluenes

Synthesis of Cycloveratrylene Macrocycles and Benzyl Oligomers Catalysed by Bentonite under Microwave/Infrared and Solvent-Free Conditions

“…CTVs can be prepared in three different ways: (a) by the acid-catalysed condensation of 1,2-disubstituted benzenes with formaldehyde; (b) through the condensation of diphenylmethane with 1,2-disubstituted benzenes and (c) most commonly through the use of dimethoxy-substituted benzyl alcohols under strongly acidic conditions (H 2 SO 4 /CH 3 COOH at 90 °C, H 3 PO 4 at 80 °C or Sc(OTf) 3 at 110 °C) [16,17,18,19,2021]. Oligotoluenes are of industrial interest due to their application as insulating oils in high-voltage electrical devices [22], as reagents in the production of termiticide emulsions that demonstrate good penetration and emulsion stability [23] and as reagents in the preparation of corrosion-protection products [24]. The synthesis of these compounds has been developed following two different strategies: (a) from a mixture of toluene and benzyl chloride under ultrasound (20 MHz, 6 h) and thermal energy conditions (105 °C, 2 h) [5,6] or (b) from benzyl alcohol with carbon disulfide [2] or dichloromethane [3] used as solvents.…”

Effects of Bentonite on p-Methoxybenzyl Acetate: A Theoretical Model for Oligomerization via an Electrophilic-Substitution Mechanism

“…Benzyltoluenes are of industrial interest due to their application as insulating oils in high-voltage electrical devices [1], in the production of termiticide emulsions that demonstrate good penetration and emulsion stability [2], and in the preparation of corrosion-protection products [3]. Our research group previously developed and reported a strategy to obtain oligomeric toluene compounds with solid acid catalysts using thermal energy and ultrasound [4].…”