ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1980-1984  (2)
Collection
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 113 (1980), S. 142-151 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of (Dichlorophosphinyl)methanesulfonyl ChlorideSubstitution of chlorine by fluorine in (dichlorophosphinyl)methanesulfonyl chloride (2) Cl2P(O)CH2SO2Cl leads to the fluorides F2P(O)CH2SO2X (X = Cl, F); their reactions leading to the fluorophosphorane F4PCH2SO2F and fluorophosphate anions of the type [F5PCH2SO2X]- and [O(F)P(O)CH2SO2X]- (X = Cl, F) were investigated. Hydrolysis of 2 yields the acid (HO)2P(O)CH2SO2OH, from which esters and amides have been derived. The conversion of the esters to α,β-unsaturated sulfonic acid derivatives via the Horner-Wittig reaction is also described.
    Notes: Substitution von Chlor durch Fluor in (Dichlorphosphinyl)methansulfonylchlorid (2), Cl2P(O)CH2SO2Cl liefert die Fluoride F2P(O)CH2SO2X (X = Cl, F), deren Umwandlung zum Fluorphosphoran F4PCH2SO2F und zu Fluorophosphat-Anionen des Typs [F5PCH2SO2X]- bzw. [O(F)P(O)CH2SO2X]- (X = Cl, F) untersucht wird. Die Hydrolyse von 2 führt zur Säure (HO)2P(O)CH2SO2OH, von der Ester und Amide dargestellt werden. Die Ester werden in einer Horner-Wittig-Reaktion in α,β-ungesättigte Sulfonsäureverbindungen umgewandelt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 114 (1981), S. 1082-1090 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Nuclear Magnetic Resonance Spectroscopic Studies of Alkylene/Alkylidenebis(phosphonic Dihalides) and- bis(fluorophosphoranes)Chlorine-fluorine exchange in the bis(phosphonic dichlorides) Cl2P(O) - X- P(O)Cl2 (1a-c) with AsF3 furnisches the bis(phosphonic difluorides) F2P(O)—X—P(O)F2 (2a-c). Reaction of 2a-c with SF4 leads to bis(tetrafluorophosphoranes) F4P—X—PF4 (3a-c) (X = CH2, CH2CH2, trans-CH=CH). Additional methods of synthesis are indicated for compound 3a (X = CH2) which are based on the cleavage of the Si—C bond with PF5 in the Si-C bonded precursors [Me2SiCh2]2 and Me3SiCH2PF4. The NMR spectra of compounds 2 and 3 are discussed.
    Notes: Durch Chlor-Fluor-Austausch in den Bis(phosphonsäuredichloriden) Cl2P (O)—X—P(O) Cl2 (1a-c) mit AsF3 werden die Bis(phosphonsäuredifluoride) F2P (O)—X—P(O)F2 (2a-c) dargestellt. Deren Umsetzung mit SF4 liefert die Bis(tetrafluorphosphorane) F4P—X—PF4 (3a-c) (X = CH2, CH2 CH2, trans-CH = CH). Für die Verbindung 3a (X = CH2) werden weitere Darstellungsmethoden angegeben, die sich auf die Spaltung der Si—C-Bindung mit PF5 in den Si—C-Verbindungen [Me2SiCH2]2 bzw. Me3 SiCH2PF4 gründen. Die NMR-Spektren der Verbindungen 2 und 3 werden diskutiert.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...