A general protocol for the reductive N-methylation of amines using dimethyl carbonate and molecular hydrogen: mechanistic insights and kinetic studies

2016 ◽  
Vol 6 (22) ◽  
pp. 7956-7966 ◽  
Author(s):  
Jose R. Cabrero-Antonino ◽  
Rosa Adam ◽  
Kathrin Junge ◽  
Matthias Beller
Keyword(s):  
Molecular Hydrogen ◽  
Dimethyl Carbonate ◽  
Kinetic Studies ◽  
Reducing Agent ◽  
Aliphatic Amines ◽  
First Time ◽  
Aromatic And Aliphatic Amines

A general and selective ruthenium-catalyzed reductive N-methylation of primary and secondary aromatic and aliphatic amines using dimethyl carbonate as a C1 source and molecular hydrogen as a reducing agent is reported for the first time.

scholarly journals Line observations of the 30-Dor complex and N159A5 with the MPE imaging NIR spectrometer FAST

1991 ◽  
Vol 148 ◽  
pp. 205-206 ◽  
Author(s):  
A. Krabbe ◽  
J. Storey ◽  
V. Rotaciuc ◽  
S. Drapatz ◽  
R. Genzel
Keyword(s):  
Spatial Resolution ◽  
Molecular Hydrogen ◽  
Near Infrared ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Emission Lines ◽  
Resolving Power ◽  
Max Planck ◽  
First Time ◽  
Infrared Array

Images with subarcsec spatial resolution in the light of near-infrared atomic (Bry) and molecular hydrogen H2 (S(1) v=1-0) emission lines were obtained for some extended, pointlike objects in the Large Magellanic Cloud (LMC) for the first time. We used the Max-Planck-Institut für extraterrestrische Physik (MPE) near-infrared array spectrometer FAST (image scale 0.8”/pix, spectral resolving power 950) at the ESO/MPI 2.2m telescope, La Silla. We present some results on the 30-Dor complex and N159A5.

scholarly journals AGN Spectra as Seen by the Infrared Space Observatory: First Results

1997 ◽  
Vol 159 ◽  
pp. 333-336
Author(s):  
D. Lutz ◽  
R. Genzel ◽  
E. Sturm ◽  
A.F.M. Moorwood ◽  
E. Oliva ◽  
...  
Keyword(s):  
Fine Structure ◽  
Short Wavelength ◽  
Molecular Hydrogen ◽  
Molecular Gas ◽  
Space Observatory ◽  
Infrared Space Observatory ◽  
First Results ◽  
External Galaxies ◽  
First Time ◽  
Fine Structure Lines

AbstractWe discuss 2.5–45 µm spectra of the Circinus galaxy and of Cen A, obtained with the Short Wavelength Spectrometer (SWS) on board the Infrared Space Observatory. The large number of detected ionic fine structure lines, observable also in visually obscured sources, provides strong constraints on the shape of the ionizing spectrum, which is found to exhibit a UV bump peaking at ~ 70 eV in the case of Circinus. Pure rotational emission of molecular hydrogen, directly probing warm molecular gas, can for the first time be detected in external galaxies.

Iron-Catalyzed One-pot Synthesis of Indole-tethered Tetrasubstituted Pyrroles and Their Transformations to Indolizino[8,7-b]indole Derivatives

Synthesis ◽  
2021 ◽  
Author(s):  
Xue Xiao ◽  
Xiao-Hui Chen ◽  
Xian-Xun Wang ◽  
Wan-Zhen Li ◽  
Hai-Lei Cui
Keyword(s):  
Aliphatic Amines ◽  
Electrophilic Cyclization ◽  
Indole Derivatives ◽  
One Pot ◽  
One Pot Synthesis ◽  
Aromatic And Aliphatic Amines

We have developed an efficient iron-catalyzed one-pot reaction of tryptamines, ynones and nitroolefins affording indole-tethered tetrasubstituted pyrroles in acceptable to good yields. Other aromatic and aliphatic amines can also be utilized in this process delivering corresponding highly functionalized tetrasubstituted pyrroles. Indolizino[8,7-b]indole derivatives could be obtained through TFA, TfOH or Fe(OTf)3-mediated cyclizations via dearomatization of indole. Unexpected dibrominated products, 7,9-dibromo-6,11-dihydro-5H-indolizino[8,7-b]indoles, were formed when PTAP was employed as electrophilic cyclization promoter.

tert-Butyl(3-cyano-4,6-dimethylpyridin-2-yl)carbonate as a green and chemoselective N-tert-butoxycarbonylation reagent

2019 ◽  
Vol 43 (17) ◽  
pp. 6549-6554
Author(s):  
Fangyu Du ◽  
Qifan Zhou ◽  
Yang Fu ◽  
Hanqi Zhao ◽  
Yuanguang Chen ◽  
...  
Keyword(s):  
Aliphatic Amines ◽  
Tert Butyl ◽  
Aromatic And Aliphatic Amines

The use of tert-butyl(3-cyano-4,6-dimethylpyridin-2yl) carbonate as a chemoselective tert-butoxycarbonylation reagent for aromatic and aliphatic amines has been demonstrated (30 examples).

scholarly journals N-Acetylation of Amines in Continuous-Flow with Acetonitrile—No Need for Hazardous and Toxic Carboxylic Acid Derivatives

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1985 ◽  
Author(s):  
György Orsy ◽  
Ferenc Fülöp ◽  
István M. Mándity
Keyword(s):  
Carboxylic Acid ◽  
Continuous Flow ◽  
Scale Up ◽  
Drug Substance ◽  
Aliphatic Amines ◽  
Aromatic And Aliphatic Amines

A continuous-flow acetylation reaction was developed, applying cheap and safe reagent, acetonitrile as acetylation agent and alumina as catalyst. The method developed utilizes milder reagent than those used conventionally. The reaction was tested on various aromatic and aliphatic amines with good conversion. The catalyst showed excellent reusability and a scale-up was also carried out. Furthermore, a drug substance (paracetamol) was also synthesized with good conversion and yield.

Development of Four-Component Synthesis of Tetra- and Pentasubstituted Polyfunctional Dihydropyrroles: Free Permutation and Combination of Aromatic and Aliphatic Amines

2013 ◽  
Vol 15 (4) ◽  
pp. 183-192 ◽  
Author(s):  
Longyun Lv ◽  
Sichao Zheng ◽  
Xiaotie Cai ◽  
Zhipeng Chen ◽  
Qiuhua Zhu ◽  
...  
Keyword(s):  
Aliphatic Amines ◽  
Aromatic And Aliphatic Amines

Kinetic studies of gold(III) chloride complex reduction and solid phase precipitation in acidic aqueous system using dimethylamine borane as reducing agent

2012 ◽  
Vol 127-128 ◽  
pp. 43-53 ◽  
Author(s):  
Marek Wojnicki ◽  
Ewa Rudnik ◽  
Magdalena Luty-Błocho ◽  
Krzysztof Pacławski ◽  
Krzysztof Fitzner
Keyword(s):  
Solid Phase ◽  
Kinetic Studies ◽  
Aqueous System ◽  
Reducing Agent ◽  
Chloride Complex ◽  
Phase Precipitation ◽  
Dimethylamine Borane

scholarly journals Reducing-agent-free facile preparation of Rh-nanoparticles uniformly anchored on onion-like fullerene for catalytic applications

RSC Advances ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 2545-2559 ◽  
Author(s):  
Mayakrishnan Gopiraman ◽  
Somasundaram Saravanamoorthy ◽  
Sana Ullah ◽  
Andivelu Ilangovan ◽  
Ick Soo Kim ◽  
...  
Keyword(s):  
Reducing Agent ◽  
Fullerene C60 ◽  
Facile Preparation ◽  
Catalytic Applications ◽  
First Time

Herein we report a very simple ‘mix and heat’ synthesis of a very fine Rh-nanoparticle loaded carbon fullerene-C60 nanocatalyst (Rh(0)NPs/Fullerene-C60) for the very first time.

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