Results 61 to 70 of about 26,582 (202)
FTIR analysis of aviation fuel deposits [PDF]
, 1984 Five modes of operation of the Nicolet 7199 Fourier Transform Infrared Spectrophotometer have been evaluated for application in analysis of the chemical structure of accelerated storage/thermal deposits produced by jet fuels.
Helmick, L. S., Seng, G. T.
core +2 more sources
, 2016 The role of polycyclic aromatic hydrocarbons (PAH) and Nitrogen containing PAH (PANH) as intermediates of aerosol production in the atmosphere of Titan has been a subject of controversy for a long time.
Benilan, Yves +6 more
core +3 more sources
MoleculesThe procedure for the generation of azirinyl-substituted nitrile oxides by the reaction of 2-(diazoacetyl)-2H-azirines with tert-butyl nitrite while preserving the azirine ring has been developed.
Alexander S. Dudik +4 more
doaj +1 more source
Minor groove binders: some recent research in drug development [PDF]
, 2009 The role of the naturally occurring polyamides distamycin and netropsin as antibacterial agents is described. Also, the importance of the modifications to the lipophilic and hydrophobic moieties is discussed.
Khalaf, Abedawn I.
core
Multicomponent reactions in PEG-400: ruthenium-catalyzed synthesis of substituted pyrroles [PDF]
, 2014 International audienceAn efficient and eco-friendly method for the synthesis of substituted pyrroles has been developed via ruthenium-catalyzed multicomponent reaction of ketone, amine, and ethylene glycol in PEG-400 as solvent medium without using any ...
Chandrasekhar, Srivari +4 more
core +3 more sources
Spatial separation of pyrrole and pyrrole-water clusters [PDF]
Chemical Physics Letters, 2019 We demonstrate the spatial separation of pyrrole and pyrrole(H$_2$O) clusters from the other atomic and molecular species in a supersonically-expanded beam of pyrrole and traces of water seeded in high-pressure helium gas. The experimental results are quantitatively supported by simulations.
Johny, Melby +5 more
openaire +4 more sources
The odour of white bread [PDF]
, 1973 Volatile constituents of white bread were investigated. Different methods were used for isolating and concentrating components to avoid artefacts as far as possible. Especially good was enlarged vapour analysis.
Mulders, E.J.
core +1 more source
Beilstein Journal of Organic Chemistry, 2015 The synthesis of N-arylated pyrroles and indoles is documented, as well as their functionalization by deprotonative metallation using the base in situ prepared from LiTMP and ZnCl2·TMEDA (1/3 equiv).
Mohamed Yacine Ameur Messaoud +12 more
doaj +1 more source
Synthesis of formyl-thienylpyrroles : versatile building blocks for NLO materials [PDF]
, 2006 Several formyl-substituted 1-alkyl(aryl)-2-(2´-thienyl)pyrroles 3-7 were synthesized by functionalization of the pyrrole or thiophene ring of thienylpyrroles 2 using different methods: Vilsmeier formylation or metalation followed by reaction with DMF ...
Fonseca, A. Maurício C. +3 more
core +1 more source
Carbohydrate-auxiliary assisted preparation of enantiopure 1,2-oxazine derivatives and aminopolyols
Beilstein Journal of Organic Chemistry, 2012 An approach to enantiopure hydroxylated 2H-1,2-oxazine derivatives is presented utilizing the [3 + 3] cyclisation of lithiated alkoxyallenes and an L-erythrose-derived N-glycosyl nitrone as precursors.
Marcin Jasiński +2 more
doaj +1 more source