Blends of a thermotropic copolyester and a thermotropic copoly(ester–amide): structure and mechanical properties
作者:F.J. Vallejo、J.I. Eguiazábal、J. Nazábal
DOI:10.1016/s0032-3861(01)00475-x
日期:2001.11
Rodrun 5000/Vectra B950 blends were obtained by direct injection moulding at two injections rates. The blends were partially miscible and unreacted under the processing conditions used. Higher orientations and properties were obtained at the lower injection rate due to the higher overall orientation obtained. The produced orientation and the negative volume of mixing of the blends led to a range of
Reductive Coupling Reactions of 2-Nitrochalcones and their β-Hydroxy-analogues: New Syntheses of 2-Arylquinoline and 2-Aryl-4-hydroxyquinoline Derivatives
作者:Ana I. R. N. A. Barros、André F. R. Dias、Artur M. S. Silva
DOI:10.1007/s00706-007-0647-9
日期:2007.6
A one-pot synthesis of novel 2-arylquinolines and 2-aryl-4-hydroxyquinolines was developed from the intramolecular reductive coupling reactions of 2-nitrochalcones and 3-hydroxy-1-phenyl-3-(2-nitrophenyl)-2-propen-1-ones. Depending on the reduction method and on the presence of electron donating substituents on the A ring of 2-nitrochalcones one can modulate the formation of 2-arylquinolines, their N-oxides, and of 2-aminochalcones. The reduction of 3-hydroxy-1-(2-hydroxyphenyl)-3-(2-nitrophenyl)-2-propen-1-ones with stannous chloride in hydrochloric acid gave 2 '-aminoflavones and with ammonium formate and Pd/C yielded 2-(2-hydroxyaryl)-4-hydroxyquinolines.
Reactivity of the Heterocyclic Nuclear Halogen in the Friedel—Crafts Reaction: The Preparation of Some Dihydroxyphenylquinoline and -benzothiazole Derivatives
作者:Gabriello Illuminati、Henry Gilman
DOI:10.1021/ja01131a053
日期:1952.6
Repinskaya, I. B.; Makarova, Z. S.; Koptyug, V. A., Journal of Organic Chemistry USSR (English Translation), 1980, vol. 16, p. 1092 - 1096
作者:Repinskaya, I. B.、Makarova, Z. S.、Koptyug, V. A.
DOI:——
日期:——
REPINSKAYA I. B.; MAKAROVA Z. S.; KOPTYUG V. A., ZH. ORGAN. XIMII, 1980, 16, HO 6, 1263-1268
作者:REPINSKAYA I. B.、 MAKAROVA Z. S.、 KOPTYUG V. A.