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
Filter
  • Wiley-Blackwell  (157)
  • Cambridge University Press  (5)
  • 1995-1999  (91)
  • 1990-1994  (55)
  • 1970-1974  (6)
  • 1935-1939  (10)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Regiospecific Hydroxylation of Metallodisilanes of the Iron Group - An Impressive Example of the Transition Metal Effect (1998)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 1585-1587 
    Details
    ISSN: 1434-1948
    Keywords: Metallodisilanes ; Oxofunctionalization ; Metallodisilandiols ; Silanetriols ; Metallosiloxanes ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reaction of the ferriodisilanes C5R5(OC)2Fe-Si2H5 [R = H (1a), Me (1b)] with dimethyldioxirane leads to selective insertion of oxygen into the α-Si-H bonds to yield the ferriodihydroxydisilanes C5R5(OC)2Fe-Si(OH)2-SiH3[R = H (2a), Me (2b)]. Another access to yield 2a is opened by hydrolysis of the dichloro(ferrio)disilane Cp(OC)2Fe-SiCl2-SiH3 (3a). Treatment of the pentachloro(metallo)disilanes C5H5(OC)2Fe-Si2Cl5 (4a) and C5Me5(OC)2Ru-Si2Cl5 (4b) with water results in regiospecific hydroxylation of the β-silicon atom to generate metallodisilanetriols C5R5(OC)2M-SiCl2-Si(OH)3 [M = Fe, R = H (5a); M = Ru, R = Me (5b)]. Controlled condensation of 5b with Me2Si(H)Cl leads to the novel rutheniosiloxane C5Me5(OC)2Ru-SiCl2-Si(OSiMe2H)3 (6).
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    Marie-luise, Nath: Die Volksrepublik China in Deutschland, Wahrnehmungen, Wissenschaftskonzeptionen und Wirklichkeiten. : Frankfurt am Main:, Peter Lang,, 1995 (1996)
    Cambridge : Cambridge University Press
    The @China quarterly 147 (1996), S. 1007-1009 
    Details
    ISSN: 0305-7410
    Source: Cambridge Journals Digital Archives
    Topics: Linguistics and Literary Studies , History , Political Science , Sociology , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0305741000052164
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Germany and China: A Continental Temptation (1996)
    Cambridge : Cambridge University Press
    The @China quarterly 147 (1996), S. 706-725 
    Details
    ISSN: 0305-7410
    Source: Cambridge Journals Digital Archives
    Topics: Linguistics and Literary Studies , History , Political Science , Sociology , Economics
    Notes: The fact that Reichswehr officers served as advisors to Chiang Kai-shek between 1927 and 1936 and that Hitler, before concluding his anti- Comintern pact with Japan, may have toyed with a Chinese alternative, can only partly be explained by Germany's great power aspirations at the time. Bom powers had been latecomers to global interaction and were rather traditional continental players when compared with Britain or the United States. Both derived their foreign policy claims from a pre-modern and sometimes mythological status.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0305741000051766
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Pyrazolo[3,4-d]pyrimidine 2′ -Deoxy- and 2′,3′ -Dideoxyribonucleosides: Studies on the glycosylation of 4-methoxypyrazolo[3,4-d]pyrimidine (1993)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 76 (1993), S. 1450-1458 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The glycosylation of the 4-methoxypyrazolo[3,4-d]pyrimidine (5) anion with 1-halo-2-deoxyribose 6 in MeCN/TDA-1 gives N2-deoxynucleoside 9 (29%) together with N1-isomer 7 (48%) and its anomer 8 (6%) [7]. The α-D-anomer 8 is not formed and the yield of the ß-D-anomer 7 increased to 62% when dimethoyethane is used as solvent and [18]crown-6 as catalyst. Employing 1-halo-2,3-dideoxyribose 10 instead of halogenose 6, the 2′,3′ -didexoynucleosides 12 and 14 were formed which desilylated (→ 1b and 2b) and converted into the ddI and ddA derivatives 3b (c7z8Idd), 15b (c7z8Add), and 17 (c7z8A′dd). Contrary to 7-deazapurine nucleotides, the triphosphates of 3b and 15b showed on appreciable activity against HIV-reverse transcriptase.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19930760405
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    About some Electrophilic Substitution Reactions with [(CF3S)3C+][AsF-6] (1995)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 128 (1995), S. 435-436 
    Details
    ISSN: 0009-2940
    Keywords: Trifluoromethylthio group ; Carbenium ions ; Diphenylmethane ; Dyes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Tris(trifluoromethylthio)carbenium hexafluoroarsenate (1) reacts with N,N-dimethylaniline and anisole to form the corresponding diphenylmethanes 2, 3 with the SCF3 group at the methine carbon atom. During the reaction of 1 with benzene, compounds such as C6H5C(SCF3)3 and C6H5SCF3 are formed along with benzophenone, a product of hydrolysis of the diphenylmethane compound.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19951280417
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Übergangsmetall-Stannyl Komplexe, 10[1]. Molybdocen- und Wolframocen-Derivate mit zwei unterschiedlichen Liganden der 4. Hauptgruppe (1996)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 1131-1142 
    Details
    ISSN: 0009-2940
    Keywords: Stannyl complexes ; Plumbyl complexes ; Tungsten complexes ; Molybdenum complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Transition-Metal Stannyl Complexes, 10 - Molybdocen and Wolframocen Derivatives with Two Different Main-Group-4 LigandsReactions of Li[Cp2MSnPh3] (M = Mo, W) with CH3I, BuBr, PhCH2Br, PhC(O)Cl or Br(CH2)nBr (n = 4,5) yield Cp2M(R)SnPh3 [R = CH3, Bu, CH2Ph, C(O)Ph, (CH2)nBr], while tBuBr or CH3C(O)Cl give the hydrido complexes Cp2M(H)SnPh3. A silyl stannyl complex is only obtained from Li[Cp2WSnPh3] and Me3SiOSO2CF3, but not with Me3SiCl or from the anionic Mo complex. In contrast, the reactions of chlorostannanes provide the bis(stannyl) complexes Cp2M(SnR′3)SnPh3 or Cp2M(SnR′2Cl)SnPh3. R/Cl exchange at the tin atom is observed when an excess of the chlorostannane is used. Upon reaction of Li[Cp2MSnPh3] with Ph3PbCl only Cp2M(PbPh3)SnPh3 is formed, while a mixture of Cp2M(PbMe3)SnPh3 and Cp2M(PbMe2Cl)SnPh3 is obtained with Me3PbCl due to redistribution reactions. The structures of Cp2W(SnPh3)C(O)Ph, Cp2W(SnPh3)SntBu2Cl and Cp2W(SnPh3)PbMe2Cl were determined by X-ray structure analyses.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19961290924
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Synthesis and Spectroscopic Characterization of 4-Chlorophenyl Isocyanate (= 1-chloro-4-isocyanatobenzene) Adducts with Amino Acids as Potential Dosimeters for the Biomonitoring of Isocyanate Exposure (1998)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 81 (1998), S. 1254-1263 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Blood-protein adducts are used as dosimeter for modifications of macromolecules in the target organs where the disease develops. The functional groups of cysteine, tyrosine, serine, lysine, tryptophan, histidine and N-terminal amino acids are potential reaction sites for isocyanates. Especially the N-terminal amino acids, valine and aspartic acid of hemoglobin and albumin, respectively, are reactive towards electrophilic xenobiotics. To develop methods for the quantification of such blood-protein adducts, we treated 4-chlorophenyl isocyanate (1) with the tripeptide L-valyl-glycyl-glycine (2a) and with single amino acids yielding N-[(4-chlorophenyl)carbamoyl]valyl-glycyl-glycine (3a), N-[(4-chlorophenyl)carbamoyl]valine (3b), N-[(4-chlorophenyl)carbamoyl]aspartic acid (3c), N-(4-chlorophenyl)carbamoyl glutamic acid (3d), N-acetyl-S-[(4-chlorophenyl)carbamoyl]cysteine (3e), and N-acetyl-O-[(4-chlorophenyl)carbamoyl]serine (3f), Nα-acetyl-Nε-[(4-chlorophenyl)carbamoyl]lysine (3g). For several chemicals, it was shown that blood-protein adducts are good dosimeters of exposure and dosimeters for the target dose. The hydrolysis of the N-terminal adducts of isocyanates release hydantoins which can be separated from the rest of the protein and analyzed using GC/MS or HPLC. This was achieved with 3a. The released hydantoin could be analyzed using GC/MS. We propose to analyze the N-terminal adducts of isocyanates with blood protein to distinguish between arenamine and arylisocyanate exposure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19980810536
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Alkylchrom- und Alkylmangan-Reagenzien, IV. Über die Aldehyd- und cheleselektive Alkylierung organischer Carbonylverbindungen mit Monoalkylchrom(III)-Reagenzien (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 157-162 
    Details
    ISSN: 0009-2940
    Keywords: Chromium organo compounds ; Chemoselectivity ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Alkylchromium and Alkylmanganese Reagents, IV.  -  On the Aldehyde and Cheleselective Alkylation of Organic Carbonyl Compounds with Monoalkylchromium(III) ReagentsMonoalkylchromium(III) reagents, prepared in crystalline form or in solution, alkylate aldehydes but normally not ketones. Ketones with a basic group (HO, MeO, Me2N) in α- or β-position are methylated by MeCrCl2(thf)3, allowing the highly selective («cheleselective») methylation of such ketones in the presence of normal ketones.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921250126
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Synthesen und Reaktionen acyclischer fluororganischer Thiocarbenium-IonenHerrn Prof. Dr. W. Sawodny zum 60. Geburtstag gewidmet. (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 597-603 
    Details
    ISSN: 0009-2940
    Keywords: (Trifluoromethylthio)carbon ; Carbenium ions ; One-electron oxidation ; Superacidic systems ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Syntheses and Reactions of Fluoroorganic Acyclic Thiocarbenium IonsHerrn Prof. Dr. W. Sawodny zum 60. Geburtstag gewidmet.Arsenic pentafluoride oxidizes (F3CS)4C (1) but not (F3CS)2C = C(SCF3)2 (2) to yield the stable salt (F3CS)3C+AsF-6 (3). It reacts with halide ions to form (F3CS)3CX (3a-c, X = F, Cl, Br). Iodide is oxidized to iodine with formation of (F3CS)3CC(SCF3)3 (4) which reacts with nitrogen dioxide to give (F3CS)3CNO2 (3e). - (F3CS)3C+AsF-6 (3) removes from (F)-SCF3 (5a) a ring-bound fluorine atom to afford (F3CS)3CF and -SCF3]+AsF-6 (5). When (F3CS)3CCl (3b) is treated with AsF5, 3 and [(F3CS)2-CCl]+AsF-6 (6) are formed in a 2:1 molar ratio. The latter reacts with F- or Cl- to give (F3CS)2CClX (6a,b; X = F, Cl). AsF5 is capable of abstracting a fluoride ion from (F3CS)3 - n Cln,CF only if n = 0 or 1. For n = 2 no similar reaction takes place, but with AlCl3 in BCl3 halogen exchange to F3CSCCl3 (7b) is observed. - Alkylation of (F3CS)2C=S (8) with H3CF/AsF5 yields [(F3CS)2CSCH3]+AsF-6 (9), which adds a fluoride ion to give (F3CS)2(H3CS)CF (9a). The molecular structures of (F3CS)2C = C(SCF3)2 (2) and (F3CS)3CC(SCF3)3 (4) have been determined by X-ray diffraction methods.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941270403
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    N,N-Bis(trimethylsilyl)ynamines: Cycloaddition Reactions with Dimethyl Acetylenedicarboxylate and Ketenes (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 1287-1293 
    Details
    ISSN: 0009-2940
    Keywords: Ynamines, N,N-bis(trimethylsilyl)- ; Cycloaddition reactions ; Cyclopropenes ; Furans ; Ketenes ; Cyclobutenones ; Allenylcarboxamides ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: N,N-Bis(trimethylsilyl)ynamines 1 react with dimethyl acetylenedicarboxylate (2) in a molar ratio of 1:2 to afford 3-cyclopropenylfurans 3. Configuration and conformation of 3a are confirmed by X-ray crystallography. Addition of a further mol of 1 furnishes the fumarates 4. With ketenes 5 (5c, d are prepared in situ) a competition between the formation of cyclic butenone derivatives 6 and allenic imidates 7 is observed, depending on the substitution pattern of 1. After hydrolytic workup, the corresponding amides 10 or the vinylogous amides 9 are obtained in good yield. These experiments indicate that the silylated ynamines 1 show a completely different, more selective reactivity towards dimethyl acetylenedicarboxylate compared to N,N-dialkyl-substituted ynamines, yielding furan derivatives instead of anilines. Towards ketenes, however, a similar cycloaddition reactivity as for N,N-dialkylynamines is observed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941270718
    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...