WebPolyphosphoric acid trimethylsilyl ester (PPSE) in the synthesis of heterocycles Isabel A. Perillo, Monica E. Hedrera Pages: 105 - 111 Number of pages: 7: ... and comparison with related reagents such as polyphosphoric acid (PPA) … WebThe esters could be converted to the corresponding 477-selenines by treatment with polyphosphoric acid trimethylsilyl ester (PPSE), a useful reagent for eliminations under neutral conditions. These 4/7-selenines were key intermediates in the synthesis of selenabenzenes.
Stearic acid, TMS derivative - NIST
WebThe present disclosure provides a modified natural rubber providing excellent odor reduction and degradation resistance while being made from a solid raw material such as cup lump, and a rubber composition and a tire each containing the modified natural rubber. The present disclosure relates to a modified natural rubber produced from (1) a solid raw … WebApr 15, 2001 · Alternate Names: polyphosphoric acid trimethylsilyl ester; PPSE. Solubility: sol dichloromethane, chloroform, 1,2-dichloroethane, benzene, toluene, xylene, 1,2 … ctfshow web580
[PDF] PAPER: REVIEW Polyphosphoric acid trimethylsilylester: a …
WebSep 1, 2007 · The polyphosphoric acid (PPA) esters ethyl polyphosphate ... Trimethylsilyl polyphosphate in solvent-free conditions allowed for the synthesis of hitherto-unreported … WebSep 26, 2003 · Polyphosphoric acid trimethylsilyl ester (PPSE)-promoted intramolecular Friedel-Crafts reactions on a nonaromatic carboxylic acid system have been investigated and led to the synthesis of C-18 functionalized steroidal compounds 5 and 9a-d with strict retention of the spiroketals. [reaction: see text]. Polyphosphoric acid trimethylsilyl ester … WebTrimethylsilyl polyphosphate; CAS Number: 40623-46-9; Synonyms: PPSE,Polyphosphoric acid trimethylsilyl ester; Linear Formula: {-P(=O)[OSi(CH3)3]O-}n; find Sigma-Aldrich-414026 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich. KH EN. Applications Products Services Support. ctfshow web57