Substituents Effect on the Reaction of Aromatic Acetals Over Aluminium Phosphate and Aluminium Sulphate Catalyst
Aromatic acetals in the presence of aluminium phosphate (AP) catalyst at elevated temperatures yield the corresponding esters (b), ethers (c) and the parent aldehydes (d).These substrates over aluminium sulphate (AS) catalyst give only the esters (b) and aldehydes (d).The products distribution varies with temperature.Substituents in the ring also play a part in the reaction.
Xavier, N.,Arulraj, S. J.
p. 775 - 777
(2007/10/02)
REARRANGEMENT OF SUBSTITUTED AROMATIC ACETALS CATALYSED BY γ-ALUMINA
Aromatic acetals over γ-alumina undergo rearrangement to give the corresponding esters (b) and ethers (c) in good yield.The product distribution varied unusually over the range of reaction temperatures.The effect of substituents has also been felt much in the study.Probable mechanisms have been suggested for the reaction.The catalyst has been characterized by various studies and the specific poisoning of the catalyst has been done with NH3, CO2 and H2S.
Xavier, N.,Arulraj, S. J.
p. 2875 - 2878
(2007/10/02)
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