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  • 1955-1959  (20)
  • 1945-1949  (3)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Basicity of the Amide Bond1,2 (1955)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 77 (1955), S. 6194-6196 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01628a031
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  • 2
    Electronic Resource
    Electronic Resource
    N1-Alkoxysulfanilamide Derivatives (1945)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 67 (1945), S. 1852-1853 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01226a502
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  • 3
    Electronic Resource
    Electronic Resource
    EVIDENCE FOR THE PRESENCE OF COBALT HYDROCARBONYL UNDER CONDITIONS OF THE OXO REACTION (1956)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 78 (1956), S. 5450-5451 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01601a083
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of aliphatic amino dicarboxylic acids from thiophene (1956)
    Springer
    Russian chemical bulletin 5 (1956), S. 1311-1314 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary By hydrogenolysis of the corresponding thiophene derivatives, the following aliphatic amino dicarboxylic acids were prepared: 2-aminodecanedioic, 2-aminoundecanedioic, and 5-aminotridecanedioic acids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01173794
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  • 5
    Electronic Resource
    Electronic Resource
    Investigation of hydrogen bonding in α-aminonicotine by the method of comparing infrared absorption spectra (1956)
    Springer
    Russian chemical bulletin 5 (1956), S. 323-326 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Investigation of aminonicotines and their hydrochlorides by the method of infrared absorption spectra showed. 1. The presence of an intramolecular hydrogen bond in α-aminonicotine. The wave number for the valancy vibration of the N-H link participating in the intramolecular hydrogen bond is 3325 cm−1 in the crystal and 3290 cm−1 in carbon tetrachloride solution. 2. The intramolecular bond in α-aminonicotine is broken when hydrogen halide or methyl iodide adds to the pyrrolidine nitrogen. 3. The hydrochlorides of α- and α-aminonicotines have similar spectra.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01172452
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  • 6
    Electronic Resource
    Electronic Resource
    Chloromethylation of 2,5-dimethylthiophene (1956)
    Springer
    Russian chemical bulletin 5 (1956), S. 487-496 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary 1. A study was made of the chloromethylation of 2,5-dimethylthiophene with a mixture of formaldehyde and hydrochloric acid and with chloromethyl methyl ether. The presence of the compound of m.p. 72* described by Buu-Hoi and Hoan could not be detected among the reaction products. 2. In the chloromethylation of 2,5-dimethylthiophene in presence of zinc chloride, compounds were formed which corresponded in composition to 3,3′-methylenebis[2,5-dimethylthiophene] and 3,4-bis(2,5-dimethyl-3-thenyl)-2,5-dimethylthiophene. These compounds were obtained also when 2,5-dimethylthiophene reacted with 3-(chloromethyl)-2,5-dimethylthiophene in presence of aluminum chloride and when 2,5-dimethylthiophene reacted with 2,5-dimethyl-3-thiphenemethanol in presence of sulfuric acid. 3. The compound of m.p. 43.5° was obtained also by the reduction of bis (2,5-dimethyl-3-thienyl) ketone. 4. By the chloromethylation of 2,5-diethylthiophene and of 2,5-di-tert-butylthiophene under selected conditions, the corresponding dialkylbischloromethylthiphenes were obtained. The formation of substituted methylenedithiophenes was not observed under these conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01191850
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  • 7
    Electronic Resource
    Electronic Resource
    Synthesis of aliphatic alcohols from thiophene and its homologs (1956)
    Springer
    Russian chemical bulletin 5 (1956), S. 1013-1019 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary 1. The following thiophene derivatives were prepared: 5-methyl-2-thienyl 2-thienyl ketone, 5-methyl-2,2'-methylenedithiophene, 5-(5-methyl-2-thenyl)-2-thiophenecarboxaldehyde, 5-butyl-2-thiophenecarboxal-dehyde, 5-tert-butyl-2-methyl- or 2-tert-butyl-5-methyl-3-thiophenecarboxaldehyde, 2,5-di-tert-butyl-3-thiophenecarboxaldehyde. 2. By the action of Raney nickel of 5-methyl-2-thienyl 2-thienyl ketone, 5-(5-methyl-2-thenyl)-2-thiophenecarboxaldehyde, 5-butyl-2-thiophenecarboxaldehyde, 5-tert-butyl-2-methyl- or 2-tert-butyl-5methyl-3-thiophenecarboxaldehyde, 2,5-di-tert-butyl-3-thiophenecarboxaldehyde, and 5-tert-butyl-2-thio phenecarboxaldehyde we were able to prepare the following aliphatic alcohols: 5-decanol, 1-undecanol, 1-nonanol, 5,5-dimethyl-2-ethyl- l-hexanol (or.4,4-dimethyl-2-propyl-l-pentanol), 5,5-dimethyl-2-neopentyl1-hexanol, and 6,6-dimethyl-l-heptanol. 3. An attempt to bring about the hydrogenolysis of 2,5-di-tert-butyl-3-thienyl methyl ketone over Raney nickel W-5 did not give the desired results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01166418
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  • 8
    Electronic Resource
    Electronic Resource
    Structure of the acetylation and formylation products of 2-tert-butyl-5-methylthiophene and 2,5-di-tert-butylthiophene (1957)
    Springer
    Russian chemical bulletin 6 (1957), S. 113-118 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary 1. It was shown that, in the formylation, acetylation, and bromination of 2-tert-butyl-5-methylthiophene, the new substituent enters the 4-position (the β-position next to the methyl). 2. It was shown that, in the acetylation of 2,5-di-tert-butylthiophene in presence of stannic chloride, no migration of the tert-butyl group occurs. 3. It was shown that it is possible to prepare thiophenecarboxylic acids containing α-alkyl radicals (methyl, tert-butyl) by the simultaneous action of iodine and pyridine on the corresponding ketone and subsequent splitting of the resulting pyridinium salt with alkali. 4. The following were prepared for the first time: 5-tert-butyl-2-methyl-3-thiophenecarboxylic acid, 2,5-di-tert-butyl-3-thiophenecarboxylic acid, and 3-bromo-5-tert-butyl-2-methylthiophene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01168854
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  • 9
    Electronic Resource
    Electronic Resource
    Action of water on 3,4-bischloromethyl-2,5-dimethylthiophene (1956)
    Springer
    Russian chemical bulletin 5 (1956), S. 1235-1240 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary 1. When 3,4-bischloromethyl-2-5,dimethylthiophene was treated with water, the condensed system, 1,3,7,9-tetramethyl-4H, 6H, 10H-dithieno[3,4-c,3′,4′-f]oxocin (II) was formed. 2. The structure of this product was confirmed by its synthesis from 3,3′-methylbenebis[2,5]dimethylthiophene] by this results of the splitting of the product with thinyl chloride, and by the results of dipole moment measurements. 3. No analogs of the compound (II) could be detected among the hydrolysis products of 2,5-di-tert-butyl-3,4-bischloromethylthiophene and of 3,4-bischloromethyl-2,5-dimethylthiophene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01173781
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  • 10
    Electronic Resource
    Electronic Resource
    Di-2-thienylmethanol (1956)
    Springer
    Russian chemical bulletin 5 (1956), S. 759-760 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The syntheses are described of the previously unknown d.-2-thienylmethanol and bis(di-2-thienylmethyl) ether.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01178943
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