ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Zur Chemie des „Dinaphthyldichinhydron” (1980)
    Springer
    Monatshefte für Chemie 111 (1980), S. 921-925 
    Details
    ISSN: 1434-4475
    Keywords: Anilinoquinone ; 3,3-Dihydroxy-4,4′-dioxo-1,1′, 4,4′-tetrahydro-1,1′-binaphthylidene ; Dinaphthyldiquinhydrone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract „Dinaphthyldiquinhydrone” (4) first obtained byStenhouse andGroves 2 reacts as well as 4,4′-bi-(1,2-naphthoquinone)1 with aniline and substituted anilines to give anilinoquinones2 a-h. However, yields of2 are considerable higher if4 is used. The IR-Spectrum of4 is very similar to that of 2,11-dihydroxy-3,10-perylenquinone, therefore we suggest for4 a the structure of a 3,3′-dihydroxy-4,4′-dioxo-1,1′, 4,4′-tetrahydro-1,1′-binaphthylidene, at least in the solid state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00899257
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Über Reaktionen mit Betainen, 19. Mitt. Über den Einfluß der Substituenten am kationischen Zentrum von Betainen auf die Bildungstendenz der Di-trifluoracetyl-N-Ylide (1985)
    Springer
    Monatshefte für Chemie 116 (1985), S. 821-829 
    Details
    ISSN: 1434-4475
    Keywords: Di-trifluoracetyl-N-ylide ; Benzyl-dimethylammonium- and phenyl-dimethylammonium-acetic acid betaine ; 1,3-Dimethylammonium-butyl acetic acid betaine ; 1,4-Dimethylpiperazinium acetic acid betaine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The influence of substituents at the ammonium nitrogen of acetic acid betaines on the reaction with trifluoracetic anhydride (TFA) has been investigated. Thus benzyl-dimethyl- and phenyl-dimethyl-betaines (1a, 1b) as well as the bifunctional betaines derived from 1,3-bis-(dimethylamino)-butane (5) or 1,4-dimethylpiperazine (7) may serve as examples. From these betaines, the symmetrical compound7 gives in 50% yield 1,4-dimethyl-piperazinium-ditrifluoracetyl-dimethylide (8), while the tendency of formation of the di-acyl-N-ylides2a, 2b, and6 is rather low.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809158
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Anilinochinone und Chinonanile aus 4,4′-Bi-(1,2-naphthochinon) (1980)
    Springer
    Monatshefte für Chemie 111 (1980), S. 199-211 
    Details
    ISSN: 1434-4475
    Keywords: Anilinoquinone ; 4,4′-Bi-(2-anilino-1-phenylcarbonyloxy-naphthaline) ; 4,4′-Bi-(1,2-naphthoquinone) ; Quinone aniles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract 4,4′-Bi-(1,2-naphthoquinone) (1) reacts with several aromatic amines to yield the anilino-quinones2 a-k. Compound2 a is characterized by the binaphthoquinone dioxime6 and the semicarbazide8. The reductive benzoylation of2 a gives the benzoylester5. The aminoquinones2 a-g can be oxidized yielding the quinone-aniles3 a-g. IR and MS spectra of2 and3 are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00938728
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Über Reaktionen mit Betain, 24. Mitt.: Über Umsetzungen von Trimethylammoniumessigsäurebetain mit reaktiven Halogenverbindungen (1989)
    Springer
    Monatshefte für Chemie 120 (1989), S. 907-912 
    Details
    ISSN: 1434-4475
    Keywords: Trimethylammonium acetic acid betaine ; Diethyl tartronate ; 1-Carbethoxy-2-methyl-(2,4-dinitrophenyl) osazone ; 1-Carbethoxy-(2,4-dinitrophenyl) osazone ; Glycolic acid nitrile
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Diethyl bromomalonate and bromoacetonitrile, respectively, react with trimethylammonium acetic acid betaine in ethanol to give diethyl tartronate and glycolic acid nitrile, respectively. By analogy, ethyl α-chloroacetonate and ethyl bromopyruvate yield the respective hydroxy derivatives which were identified by their osazones2 and3. Under the same experimental conditions, mesoxalic acid and its dimethyl ester, respectively, are formed from dibromo malonic acid and its dimethyl ester and were characterized by their known hydrazones8 and9.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00811130
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...