Synthesis of fluorinated phosphonic, sulfonic, and mixed phosphonic/sulfonic acids
نویسندگان
چکیده
منابع مشابه
Semi-fluorinated phosphonic acids form stable nanoscale clusters in Langmuir–Blodgett and self-assembled monolayers
We compared molecular monolayers of semifluorinated phosphonic acids (F8H11PO3, F10H6PO3, F8H8PO3, and F6H10PO3) on mica substrates prepared by two different methods: Langmuir–Blodgett (LB) transfer of pre-formed monolayers from the air–water interface, and self-assembled monolayers (SAMs) formed spontaneously at the interface between mica and solution (with tetrahydrofuran as the solvent). The...
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Langmuir monolayers of semi-fluorinated nonadecylphosphonic acid (F8H11PO3), hexadecylphosphonic acid (H16PO3), and their mixtures were investigated by Brewster angle microscopy (BAM), atomic force microscopy (AFM) and surface-pressure measurements. Nanometre-scale two-dimensional clusters were observed by AFM in a spread monolayer of pure F8H11PO3 transferred to mica. Two different organized a...
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Various approaches leading to mono-, diand poly-functionalized phosphonates as well as phosphoryl heterocycles were reported for the systematic study of relationship between chemical structure and biological activities of this most important class of organophosphorus compounds. Introduction Functionalization of phosphonic acid molecules opens enoi-nious possibilities of structural variation of ...
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Since 2000 there has been an on-going industrial transition to replace long-chain perfluoroalkyl carboxylic acids(PFCAs), perfluoroalkane sulfonic acids (PFSAs) and their precursors. To date, information on these replacements including their chemical identities, however, has not been published or made easily accessible to the public, hampering risk assessment and management of these chemicals. ...
متن کاملReaction of Stannyl Esters of Phosphorus Acids with Sulfonic Acids Chlorides and Carboxylic Acids Anhydrides. A Novel Synthesis of Phosphoric-Sulfonic and Phosphoric-Carboxylic Anhydrides
Mixed anhydrides of phosphorus sulfonic acids RR'P(O)OSOzR" 1 are of interest in the biological transfer of sulfates'. In the chemical synthesis of oligonucleotides, phosphoric sulfonic anhydrides 1 (R', R = nucleoside) are postulated as important and reactive intermediatesw-s-. Anhydrides 1 were also suggested as intermediates in biooxidation of thiolophosphates'. Structural analogues of anhyd...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1989
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v89-278