TITLE:
Silicotungstic Acid Modified Bentonite: An Efficient Catalyst for Synthesis of Acetal Derivatives of Aldehydes and Ketones
AUTHORS:
Reshu Chaudhary, Monika Datta
KEYWORDS:
Silicotungstic Acid; Bentonite; Aldehydes; Ketones
JOURNAL NAME:
Journal of Analytical Sciences, Methods and Instrumentation,
Vol.3 No.4,
October
22,
2013
ABSTRACT: Acetals and ketals are among the
important materials of organic synthesis and as protecting agent of carbonyl
functionality. A milder, efficient and green synthesis of acetals and ketals
has been developed using Silicotungstic acid modified Bentonite (STA-Ben) as a
catalyst. STA-Ben has been synthesized and characterized by various analytical
techniques. It has been found to be an efficient and reusable catalyst for the
synthesis of acetyl derivatives in excellent yields. In order to elucidate the
efficiency of the STA-Ben as catalyst, reaction has also been performed using
various catalysts. The reaction conditions (time and amount of catalyst) have
been optimized using various catalysts. The products of the various reactions
have been characterized by FT-IR, NMR.