Add time:09/30/2019         Source:infona.pl

Acid-treated montmorillonites belonging to the K series (supplied by Süd-Chemie) were tested as heterogeneous catalysts for the liquid-phase acylation of 1,3-dihydroxybenzene with benzoic acid; this reaction may represent an environmentally friendly alternative to the use of benzyltrichloride as the acylating agent. It was found that conversion was proportional to the Al content in samples; the catalytic activity was associated to the Brønsted acidity generated by the interaction of water molecules in hydrated clays with Al. The removal of water from samples by preliminary thermal treatment indeed led to the decrease of the catalytic activity. The reaction mechanism was found to consist of the direct O-benzoylation with formation of resorcinol monobenzoate, while no primary formation of the product of C-benzoylation (2,4-Dihydroxybenzophenone (cas 131-56-6)) occurred. The latter product formed exclusively by consecutive Fries rearrangement upon the benzoate. To cite this article: M. Bolognini et al., C. R. Chimie 7 (2004).

We also recommend Trading Suppliers and Manufacturers of 2,4-Dihydroxybenzophenone (cas 131-56-6). Pls Click Website Link as below: cas 131-56-6 suppliers