Adamantylation of N-aryl and N-arylalkyl acetamides in trifluoroacetic acid
Sign Up to like & getrecommendations! Published in 2020 at "Russian Chemical Bulletin"
DOI: 10.1007/s11172-020-2873-9
Abstract: Alkylation of N-aryl and N-arylalkyl acetamides with hydroxy adamantane derivatives in trifluoroacetic acid was studied. The differentiating effect of trifluoroacetic acid on the regio-selectivity of adamantylation of o-alkyl-substituted acetanilides was established, leading to energetically more… read more here.
Keywords: trifluoroacetic acid; aryl arylalkyl; adamantylation aryl; acetamides trifluoroacetic ... See more keywords
Synthesis, characterization, and utility of trifluoroacetic acid lanthanide precursors for production of varied phase fluorinated lanthanide nanomaterials
Sign Up to like & getrecommendations! Published in 2017 at "Polyhedron"
DOI: 10.1016/j.poly.2017.04.032
Abstract: Abstract The synthesis of a series of lanthanide trifluoroacetic acid (H-TFA) derivatives which contain only the TFA and its conjugate acid has been developed. From the reaction of Ln(N(SiMe3)2)3 with an excess amount of H-TFA,… read more here.
Keywords: trifluoroacetic acid; tfa; pdf; tfa tfa ... See more keywords
Evaluation of strategies for overcoming trifluoroacetic acid ionization suppression resulted in single-column intact level, middle-up, and bottom-up reversed-phase LC-MS analyses of antibody biopharmaceuticals.
Sign Up to like & getrecommendations! Published in 2021 at "Talanta"
DOI: 10.1016/j.talanta.2021.122512
Abstract: A wide range of strategies for efficient chromatography and high MS sensitivity in reversed-phase LC-MS analysis of antibody biopharmaceuticals and their large derivates has been evaluated. They included replacing trifluoroacetic acid with alternative acidifiers, relevancy… read more here.
Keywords: phase; trifluoroacetic acid; column; antibody biopharmaceuticals ... See more keywords
Simple Addition of Glycine in Trifluoroacetic Acid-containing Mobile Phases Enhances the Sensitivity of Electrospray Ionization Mass Spectrometry for Biopharmaceutical Characterization.
Sign Up to like & getrecommendations! Published in 2020 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.0c01319
Abstract: Trifluoroacetic acid (TFA) is a commonly used mobile phase additive in liquid chromatography-mass spectrometry (LC-MS) based biopharmaceutical characterization to enhance reversed-phase chromatographic performance of peptide separation, however it leads to significant mass spectrometry signal suppression… read more here.
Keywords: mobile phases; characterization; trifluoroacetic acid; mass spectrometry ... See more keywords
Changes in the Local Structure of Nephila clavipes Dragline Silk Model Peptides upon Trifluoroacetic Acid, Low pH, Freeze-Drying, and Hydration Treatments Studied by 13C Solid-State NMR.
Sign Up to like & getrecommendations! Published in 2018 at "Biomacromolecules"
DOI: 10.1021/acs.biomac.8b01267
Abstract: The conformational analysis of spider dragline silks is difficult because of the amorphous character of the silks. In this article, the fractions of several conformations were determined for three 47-mer peptides, (Glu)4(Ala)6GlyGly12Ala13Gly14GlnGlyGlyTyrGlyGlyLeuGlySerGlnGly25Ala26Gly27-ArgGlyGlyLeuGlyGlyGlnGly35Ala36Gly37(Ala)6(Glu)4, with three underlined… read more here.
Keywords: freeze drying; trifluoroacetic acid; acid low; low freeze ... See more keywords
Trifluoroacetic Acid-Mediated Oxidative Self-Condensation of Acetophenones in the Presence of SeO2: A Serendipitous Approach for the Synthesis of Fused [1,3]Dioxolo[4,5-d][1,3]dioxoles
Sign Up to like & getrecommendations! Published in 2021 at "ACS Omega"
DOI: 10.1021/acsomega.1c01466
Abstract: A method for the synthesis of fused 1,3-dioxolanes was developed by self-condensation of glyoxal generated in situ by oxidation of acetophenones with SeO2 in the presence of trifluoroacetic acid. Three molecules of the glyoxal generated… read more here.
Keywords: synthesis fused; self condensation; trifluoroacetic acid; presence ... See more keywords
Atmospheric Sulfuric Acid‐Dimethylamine Nucleation Enhanced by Trifluoroacetic Acid
Sign Up to like & getrecommendations! Published in 2020 at "Geophysical Research Letters"
DOI: 10.1029/2019gl085627
Abstract: Sulfuric acid (SA)‐dimethylamine (DMA)‐H2O cluster formation has been proven to be responsible for a significant part of new particle formation (NPF) in a Chinese megacity. However, the possible involvement of common atmospheric acids in the… read more here.
Keywords: acid dimethylamine; sulfuric acid; acid; trifluoroacetic acid ... See more keywords