Journal ArticleDOI
Alumina as an versatile catalyst for the selective acetalization of aldehydes
TLDR
Alumina was found to be an effective and convenient catalyst for acetalization of aldehydes to the corresponding 1,3-dioxoranes and 1, 3 -dioxanes and can be used for selective protection of only formyl group of ketoaldehydes.About:
This article is published in Tetrahedron Letters.The article was published on 1985-01-01. It has received 45 citations till now. The article focuses on the topics: Aldehyde & Benzaldehyde.read more
Citations
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Multi-step organic synthesis using solid-supported reagents and scavengers: a new paradigm in chemical library generation
Steven V. Ley,Ian R. Baxendale,Robert N. Bream,Philip S. Jackson,Andrew G. Leach,Deborah A. Longbottom,Marcella Nesi,James S. Scott,R. Ian Storer,Stephen Taylor +9 more
TL;DR: A review of solid-phase organic synthesis can be found in this article, where the authors discuss the use of reagents and scavenging reagents in the context of solid phase organic synthesis (SPOS).
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Organic reactions catalyzed over solid acids
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Brønsted instead of Lewis acidity in functionalized MIL-101Cr MOFs for efficient heterogeneous (nano-MOF) catalysis in the condensation reaction of aldehydes with alcohols.
TL;DR: The catalytic B-M activity of soluble, substitution-inert, and acidic Cr(NO3)3·9H2O supports the Brønsted-acid effect of the MIL materials.
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Tetrabutylammonium tribromide (TBATB) as an efficient generator of HBr for an efficient chemoselective reagent for acetalization of carbonyl compounds.
TL;DR: Chemoselective acetalization of an aldehyde in the presence of ketone, unsymmetrical acetal formation, shorter reaction times, mild reaction conditions, the stability of acid-sensitive protecting groups, high efficiencies, facile isolation of the desired products, and the catalytic nature of the reagent make the present methodology a practical alternative.
References
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Silica gel as an effective catalyst for the alkylation of phenols and some heterocyclic aromatic compounds
TL;DR: T-butylation du phenol, benzenediols, biphenylediol-4,4', furanne, thiophene et methyl-1 indole par le bromure de t-butyle en presence de gel de silice.
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Electrophilic Chlorination by Sulfuryl Chloride in the Presence of Silica Gel
Masaru Hojo,Ryoichi Masuda +1 more
TL;DR: In this paper, it is known that sulfuryl chloride reacts with alkyl-benzenes by a homolytic reaction mechanism and the chlorination occurs exclussively at side chains, particularly in the presence of peroxides.
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Lithium aluminum hydride on silica gel - selective reduction of ketones and carboxy esters in the presence of nitro and cyano groups
TL;DR: In this article, it was shown that carboxy esters bearing cyano and nitro groups were successfully converted into the corresponding cyano alcohols by using lithium aluminum hydride on silica gel.
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Selective reduction of ketoesters to hydroxyesters with the use of lithium aluminum hydride in the presence of silica gel
TL;DR: Lithium aluminum hydride, in the presence of a small amount of silica gel, has been found to be a versatile and highly selective reagent for reduction of various ketoesters to the corresponding hydroxyesters in fair yields as mentioned in this paper.
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Silica Gel as a Catalyst for the Condensations of Aromatic Compounds with RSCl, RSCH2Cl and S2Cl2
Masaru Hojo,Ryoichi Masuda +1 more
TL;DR: In this article, it was reported that sulfuryl chloride reacts with alkylbenzenes to give exclussively nuclear chlorination products even in the presence of peroxides, if a little amount of silica gel is added to the reaction mixture.