Selective N-Methylation of N-Methylaniline with CO2 and H2 over TiO2-Supported PdZn Catalyst
Sign Up to like & getrecommendations! Published in 2020 at "ACS Catalysis"
DOI: 10.1021/acscatal.9b04677
Abstract: A series of Pd-ZnO/TiO2, Pd/TiO2, and Pd/ZnO catalysts were synthesized and investigated for N-methylation of N-methylaniline (MA) to N,N-dimethylaniline (DMA) with CO2 and H2. A high performance w... read more here.
Keywords: tio2; methylation methylaniline; methylaniline co2; selective methylation ... See more keywords
Pd/Ni catalyzed selective N–H/C–H methylation of amides by using peroxides as the methylating reagents via a radical process
Sign Up to like & getrecommendations! Published in 2017 at "Organic chemistry frontiers"
DOI: 10.1039/c7qo00625j
Abstract: A palladium/nickel catalyzed selective N–H/C–H methylation of amides by using peroxides is described, providing N-methylation products and C-methylation products in moderate to good yields. In this procedure, peroxides play a dual role, serving as both… read more here.
Keywords: methylation; catalyzed selective; using peroxides; methylation amides ... See more keywords
DIC-Borane-Catalyzed Selective Methylation of Primary Amines with CO2 Using Boranes as Reducing Agents
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DOI: 10.1039/d3qo00058c
Abstract: The selective reductive N-methylation and N,N-dimethylation of primary amines using CO2 are some of the most significant challenges faced by organic chemists. Herein, we report the highly selective N,N’-diisopropylcarbodiimide-catalyzed methylation... read more here.
Keywords: methylation; selective methylation; borane catalyzed; dic borane ... See more keywords
Iridium catalysed C2 site-selective methylation of indoles using a pivaloyl directing group through weak chelation-assistance
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DOI: 10.1039/d3ra02031b
Abstract: Here we present an iridium catalysed C2-selective methylation of indoles using methyltrifluoroborate as a source of methyl group. The iridium catalyst selectively discriminates the indole C2 and C4 C–H bonds by coordination with a pivaloyl… read more here.
Keywords: selective methylation; indoles using; iridium; group ... See more keywords
Selective S-methylation of highly fluorinated thiocarbamates
Sign Up to like & getrecommendations! Published in 2017 at "Synthetic Communications"
DOI: 10.1080/00397911.2016.1245753
Abstract: ABSTRACT A series of new S-methyl O-fluoroalkyl N-alkyl(aryl)imidothiocarbonates were prepared by S-methylation of various fluoroalkylated thiocarbamates with methyl iodide in the presence of cesium carbonate and tetrabutylammonium iodide (TBAI) in tetrahydrofuran (THF) at room temperature.… read more here.
Keywords: methylation; fluorinated thiocarbamates; methylation highly; highly fluorinated ... See more keywords
A Novel Strategy for Selective O-Methylation of Glycerol in Subcritical Methanol
Sign Up to like & getrecommendations! Published in 2019 at "Frontiers in Chemistry"
DOI: 10.3389/fchem.2019.00357
Abstract: A new regioselective approach has been elaborated for the selective conversion of bio-based glycerol into the monomethyl derivative using sub/supercritical methanol. The reaction was realized in a batch process using three reactive components, namely, glycerol,… read more here.
Keywords: methanol; strategy selective; glycerol; novel strategy ... See more keywords