Journal
CHEMISTRYSELECT
Volume 7, Issue 22, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.202104610
Keywords
Acetalization; Aldehyde; Clay; Green chemistry; Heterogeneous catalyst; Kaolin
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Funding
- Algerian Ministry of Higher Education and Scientific Research (MESRS)
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The highly chemoselective protection of various aldehydes using natural kaolin as a catalyst is reported in this study. The reaction proceeds in ethanol solvent and produces the corresponding acetals with moderate to excellent yields and high chemoselectivity. The kaolin catalyst can be used on a gram scale for the reaction.
The highly chemoselective protection of various aldehydes by natural kaolin as a catalyst was reported. This clay was characterised by XRD, FTIR, BET and SEM techniques. The acetalization reaction was executed in ethanol as solvant and produces the corresponding acetals with moderate to excellent yields and high chemoselectivity (0 %<95 %). The reaction could be performed on a gram scale using the kaolin catalyst. The thermodynamic and kinetic studies on the reaction were conducted on the m-nitrobenzaldehyde. Algerian kaolin using for the first time in organic synthesis is an efficient heterogeneous catalyst, recyclable who can be used at the multi-gram scale. This is a low cost and very eco-friendly heterogeneous catalyst.
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