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Poly‐1,3,4‐oxadiazoles. I. Polyphenylene‐1,3,4‐oxadiazoles
Journal of Polymer Science Part A: General Papers, 1965AbstractPolyphenylene‐1,3,4‐oxadiazoles have been prepared from benzenedicarboxylic acids or their derivatives and hydrazine by solution polycondensation in fuming sulfuric acid or polyphosphoric acid. These polymers were characterized by good thermal stability, and the molecular weights attained were high enough for the products to exhibit fiber‐or ...
Yoshio Iwakura +2 more
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Banana-shaped 1,2,4-oxadiazoles
Pramana, 20033,5-Disubstituted 1,2,4-oxadiazoles are a new type of liquid crystalline (LC) compounds with asymmetrical five-membered heterocycle as a central unit. They have a bent shape and are very convenient model-compounds for studying the dependence of the LC properties on the molecular design.
S. I. TORGOVA +3 more
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Oxadiazoles in Medicinal Chemistry
Journal of Medicinal Chemistry, 2012Oxadiazoles are five-membered heteroaromatic rings containing two carbons, two nitrogens, and one oxygen atom, and they exist in different regioisomeric forms. Oxadiazoles are frequently occurring motifs in druglike molecules, and they are often used with the intention of being bioisosteric replacements for ester and amide functionalities.
Jonas, Boström +4 more
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Poly‐1,3,4‐oxadiazoles. III. Alicyclic poly‐1,3,4‐oxadiazoles
Die Makromolekulare Chemie, 1966AbstractSome alicyclic poly‐1,3,4‐oxadiazoles were prepared from cycloalkanedicarboxylic dihydrazides or from cycloalkanedicarboxylic acids and hydrazine sulfate by solution polycondensation in polyphosphoric acid. These polymers were characterized by high melting temperature.
Yoshio Iwakura +2 more
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Journal of Molecular Spectroscopy, 1967
Abstract The infrared absorption spectrum of 1,3,4-oxadiazole has been recorded in the region 5000-400 cm −1 in the vapor and in the liquid phases, in CS 2 and C 2 Cl 4 solutions. Also, the infrared absorption spectrum of liquid 2,5-dimethyl-1,3,4-oxadiazole was recorded in the same region. A tentative assignment of the fundamental vibrations of 1,
Daniel Højgaard Christensen +2 more
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Abstract The infrared absorption spectrum of 1,3,4-oxadiazole has been recorded in the region 5000-400 cm −1 in the vapor and in the liquid phases, in CS 2 and C 2 Cl 4 solutions. Also, the infrared absorption spectrum of liquid 2,5-dimethyl-1,3,4-oxadiazole was recorded in the same region. A tentative assignment of the fundamental vibrations of 1,
Daniel Højgaard Christensen +2 more
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Poly‐1, 3,4‐oxadiazoles. II. Aliphatic poly‐1,3,4‐oxadiazoles
Die Makromolekulare Chemie, 1966AbstractAliphatic poly‐1,3,4‐oxadiazoles were prepared from aliphatic dicarboxylic dihydrazides or from dicarboxylic derivatives and hydrazine sulfate by solution polycondensation in polyphosphoric acid. Their preparation and physical properties, such as solubility, crystallinity, and thermal stability are described.
Yoshio Iwakura +2 more
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2015
[288-37-9] C2H2N2O (MW = 70.050) InChI = 1S/C2H2N2O/c1-2-4-5-3-1/h1-2H InChIKey = JKFAIQOWCVVSKC-UHFFFAOYSA-N (small-molecule heterocyclic pharmacophore) Physical Data: bp 98 °C, mp −28 °C. Alternate Name: furazan. Handling: compound known to possess potent biological activities in humans; toxic by skin contact or ...
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[288-37-9] C2H2N2O (MW = 70.050) InChI = 1S/C2H2N2O/c1-2-4-5-3-1/h1-2H InChIKey = JKFAIQOWCVVSKC-UHFFFAOYSA-N (small-molecule heterocyclic pharmacophore) Physical Data: bp 98 °C, mp −28 °C. Alternate Name: furazan. Handling: compound known to possess potent biological activities in humans; toxic by skin contact or ...
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