Search results for "Trifluoroacetic anhydride"

showing 2 items of 2 documents

Gas chromatography-mass spectrometry characterization of the varnish and glue of an ancient 18th century double bass.

2007

A GC–MS investigation is conducted on the double bass “Panormus”, property of Conservatorio di Musica “Vincenzo Bellini” in Palermo. The most important components of the varnish (fatty acids) and of the glue (proteinaceous amino acids), with which the musical instrument was treated in the past, are determined. The analyses are carried out by prior derivatization of fatty acids by acidic methanol and of amino acids by acidic methanol and trifluoroacetic anhydride (TFAA). Analytes identification is achieved by direct comparison with several reference materials and the use of a digitized library.

VarnishMusical instrumentMass spectrometryBiochemistrySettore CHIM/12 - Chimica Dell'Ambiente E Dei Beni CulturaliGas Chromatography-Mass SpectrometryAnalytical Chemistrychemistry.chemical_compoundDouble bass Art analysis Derivatization GC Binding media Varnish Fatty acids Amino acids ResinsAdhesivesPaintOrganic chemistrySettore CHIM/01 - Chimica AnaliticaAmino AcidsDerivatizationFatty acid methyl esterChromatographyOrganic ChemistryFatty AcidsGeneral Medicinechemistryvisual_artvisual_art.visual_art_mediumGas chromatographyGas chromatography–mass spectrometryTrifluoroacetic anhydrideMusicJournal of chromatography. A
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N-trifluoracetyl-nylon 66 als polymeres reagenz

1979

N-Trifluoroacetyl-Nylon 66 (2) obtained by the reaction of Nylon 66 (1) with trifluoroacetic anhydride is very suitable as a polymeric reagent for the trifluoroacetylation of amines and alcohols. The advantages of 2 compared with low molecular trifluoroacetylating reagents are discussed. The selectivity against different substituted anilines and against structurally isomeric secondary amines was studied intensively by kinetic measurements.

chemistry.chemical_compoundNylon 66chemistryReagentPolymer chemistrytechnology industry and agricultureOrganic chemistrymacromolecular substancesTrifluoroacetic anhydrideSelectivityDie Makromolekulare Chemie
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