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Selective Protection of Carbonyl Compounds over Nano-sized Nickel Catalysts.
- Source :
- Catalysis Letters; May2008, Vol. 122 Issue 1/2, p98-105, 8p, 5 Diagrams, 3 Charts, 2 Graphs
- Publication Year :
- 2008
-
Abstract
- An efficient method for the preparation of 1,3-dithiolanes of aliphatic and both activated and deactivated aromatic carbonyl compounds with 1,2-ethanedithiol in the presence of a catalytic amount of inexpensive, easily recyclable, monodispersed, chemoselective Ni-nanoparticles having high TON and TOF is reported. An efficient method for the chemoselective thioacetalization of ketones in the presence of aldehydes using Ni-nanoparticles is also reported in this article. Our reaction is kinetically controlled and the method is relatively expedient, avoids the use of cost-prohibitive reagents, high temperatures and leads to excellent yield. Selective Protection of Carbonyl Compounds Over Nano-sized Nickel Catalysts Ajeet Kumar,<superscript>a</superscript> Santosh Kumar,<superscript>a</superscript> Amit Saxena,<superscript>a</superscript> Arnab De,<superscript>b</superscript> Subho Mozumdar<superscript>a</superscript>* <superscript>a</superscript>Department of Chemistry, University of Delhi, Delhi, 110007, India; <superscript>b</superscript> Department of Chemistry, Indiana University, Bloomington, USA; subhoscom@yahoo.co.in An efficient method for the preparation of 1,3-dithiolanes of aliphatic and both activated and deactivated aromatic carbonyl compounds with 1,2-ethanedithiol in the presence of a catalytic amount of inexpensive, easily recyclable, monodispersed, chemoselective Ni-nanoparticles having high TON and TOF is reported. We report an efficient method for the chemoselective thioacetalization of ketones in the presence of aldehydes using Ni-nanoparticles. Our reaction is kinetically controlled and the method is relatively expedient, avoids the use of cost-prohibitive reagents, high temperatures and leads to excellent yield. [Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1011372X
- Volume :
- 122
- Issue :
- 1/2
- Database :
- Complementary Index
- Journal :
- Catalysis Letters
- Publication Type :
- Academic Journal
- Accession number :
- 31173241
- Full Text :
- https://doi.org/10.1007/s10562-007-9349-5