Results 221 to 230 of about 484,472 (264)
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Solvent-Free Heterocyclic Synthesis
Chemical Reviews, 20096.1. Oxadiazoles 4154 6.2. Diazaphospholes 4154 7. Six-Membered Heterocycles with One Heteroatom 4155 7.1. Pyridines 4155 7.2. Pyridinones 4155 7.3. Quinolines 4156 7.4. Quinolinones 4157 7.5. Isoquinolines 4157 7.6. Acridines 4158 7.7. Pyranones 4158 7.8. Flavones 4159 8. Six-Membered Heterocycles with Two Heteroatoms 4159 8.1. Pyridazinones 4159 8.2.
Marcos A P, Martins +4 more
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Solvent-free synthesis of metal complexes
Chemical Society Reviews, 2007Avoiding the use of solvents in synthesis can reduce environmental contamination and even be more convenient than using solvent-based synthesis. In this tutorial review we focus on recent research into the use of mechanochemistry (grinding) to synthesise metal complexes in the absence of solvent.
Garay, A.L., Pichon, A., James, Stuart
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Solvent-Free Organic Syntheses
Angewandte Chemie International Edition, 1998Ecological points of view must nowadays be taken into consideration in the development of new syntheses and apportioned due importance in assessing the viability of a new synthesis. A crucial factor here is the need to restrict the use of ecologically harmful organic solvents.
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Illuminating solvent-free synthesis of zeolites
Dalton Transactions, 2020Solvent-free synthesis of zeolites is industrially efficient and sustainable with unique advantages such as morphological control, construction of hierarchical porosity, and organotemplate-free synthesis of siliceous zeolites.
Yeqing Wang +4 more
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Solvent-Free Process to Esterify Polysaccharides
Biomacromolecules, 2005A novel process for the preparation of acetates of polysaccharides is described herein. The process involves the acetylation of polysaccharides with acetic anhydride in the presence of iodine as a catalyst. No solvent is required to bring about the acetylation. The method is simple, rapid, and characterized by a high conversion ratio.
Atanu, Biswas +2 more
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Solvent effect in a “solvent free” reaction
CrystEngComm, 2007Vapour digestion of a mixture of solid [Fe(η5-C5H4–C5H4N)2] and solid pimelic acid HOOC(CH2)5COOH in the presence of solvent vapours generates co-crystals of different stoichiometry depending on the protic or aprotic nature of the solvent. The nature of the products has been ascertained by a combined use of SSNMR and X-ray diffraction.
BRAGA, DARIO +6 more
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Solvent-free aziridination of α-nitroalkenes
Tetrahedron, 1998Abstract NsONHCO 2 Et in the presence of CaO reacts without solvent with α-nitroalkenes to give 1-(ethoxycarbonyl)-2-nitroaziridines (62–84%). A possible involvement of an aza-Michael route is proposed on the basis of regio- and stereochemical reaction outcome, compared also with the results of thermolysis of ethyl azidoformate on the same α ...
FIORAVANTI, Stefania +4 more
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Solvent‐Free Luminescent Organic Liquids
Angewandte Chemie International Edition, 2012Illuminating! Isolation of a π-core by covalently attached flexible hydrocarbon chains has been employed to synthesize blue-emitting oligo(p-phenylenevinylene) (OPV) liquids with tunable viscosity and optical properties. A solvent-free, stable, white-light emitting ink/paint, which can be applied onto various surfaces and even onto LEDs, was made by ...
Sukumaran, Santhosh Babu +8 more
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Solvent-Free Functionalization of Carbon Nanotubes
Journal of the American Chemical Society, 2003A fundamentally new single-walled and multiwalled carbon nanotube sidewall functionalization technique has been developed in which solvent is not required and the reaction times are greatly shortened (1 h at 60 degrees C). Exploiting the long linear dimension of the nanotube ropes by macroscopic mechanical deformation, reactive sites are generated ...
Christopher A, Dyke, James M, Tour
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