Zobrazeno 1 - 10
of 62
pro vyhledávání: '"J. Bartulin"'
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 225:175-182
The synthesis and mesomorphic behavior of 3,5-bis-(p-n-alkoxyphenyl)isoxazole (series I) and 3,5-bis-(p-n-alkoxyphenyl)pyrazole (series II) are reported for the number of carbon atoms (n) in the alkoxy chains varying from three to eight. Series I sho
Publikováno v:
ChemInform. 23
2-Acetyl-3-hydroxyfuran (2) reacts with n-propylamine affording 2-acetyl-3-hydroxy-1-n-propylpyrrole (3) in 63% yield. The transformation of 2-methyl-3-hydroxy-4-pyrone (4) into 1-n-alkyl-3-hydroxy-2-methyl-4-pyridones is achieved by benzylation of t
Publikováno v:
ChemInform. 26
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 220:67-75
The synthesis and measurement of physical properties using DSC, X-ray and optical methods are described for the 3,5-bis-(p-n-alkoxyphenyl)-pyrazole and 3,5-bis-(p-n-alkoxyphenyl)-isoxazole series with the carbon number of the n-alkylgroup from three
Publikováno v:
Polymer Bulletin. 27:251-256
Phenolic resins containing 13-crown-4 and 9-crown-3 units (1) were modified by coupling and nitration in heterogeneous phase. The chromogenic resins extract Li+ selectively and efficiently, and no extractions of Na+ were found. The extractions were c
Publikováno v:
Molecular Crystals and Liquid Crystals. 206:131-137
The synthesis and mesomorphic properties of the 2-n-hexyl-6-(4-n-alkoxybenzoyloxy) quinoline series are described for alkoxy chain lengths varying from three to nine carbon atoms. Generally the lower homologs show a nematic and a smectic phase and th
Publikováno v:
Polymer Bulletin. 24:129-134
Polymers containing benzo-13-crown-4 (1) and benzo-9-crown-3 (2) units (1) were crosslinked with formaldehyde, phenol/formaldehyde, and resorcin/formaldehyde (2,3). Resins (3–8) were contacted with aqueous solutions of lithium and aqueous solutions
Publikováno v:
Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics. 185:131-140
The N-n-alkyl-N′-(4-n-pentyloxyphenyl)-piperazines (4) exhibit ordered smectic phases at temperatures below 100°C. For 3, 4, 5 and 6 carbons in the alkyl chain, two smectic phases are present and for 7, 8 and 9 carbons only one smectic phase is pr
Publikováno v:
Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics. 180:297-304
The synthesis and measurement of physical properties using DSC, X-ray and optical methods are described for the 2,5-di-(4-alkyloxyphenyl)thiazolo|5,4-d|thiazoles with the alkoxy chains varying from 3 to 8 carbon atoms. The phases observed were princi
Publikováno v:
Journal of Heterocyclic Chemistry. 29:1017-1019
2-Acetyl-3-hydroxyfuran (2) reacts with n-propylamine affording 2-acetyl-3-hydroxy-1-n-propylpyrrole (3) in 63% yield. The transformation of 2-methyl-3-hydroxy-4-pyrone (4) into 1-n-alkyl-3-hydroxy-2-methyl-4-pyridones is achieved by benzylation of t