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116.529  Articles
1 of 11.654 pages  |  10  records  |  more records»
Som alle andre fag har økonomi også sin udviklingshistorie. Gennem tiderne har der stort set altid eksisteret en mainstream tænkning, som var den dominerende teoriretning. Og også stort set altid har der været kritiske røster mod den herskende mainstream,... see more

New polycrystalline powder samples of double Ln2Zr(WO4)5 (Ln = Dy, Tb) tungstates were synthesized using high-temperature solid-phase and sol-gel methods. The conditions of the sol-gel synthesis of tungstates were optimized. The obtained phases were ... see more

The synthesis of a series of new 4-amino-5-alkyl-1,2,4-triazole(4H)-3-yl thioacetanilides and 4-pyrrolyl-5-alkyl-1,2,4-triazole(4H)-3-yl thioacetanilides has been described in the article. The key intermediates – 4-amino-5-alkyl-3-mercapto-1,2,4-triazoles... see more

With the aim of obtaining new biologically active substances the synthesis of amides of 5-R-phenylamino-1,3,4-thiadiazole-2-yl-thioacetate acid and 5-phenylamino-1,3,4-thiadiazole-2-yl-thio-1-phenon has been conducted. As initial substances 5-R-phenylamin... see more

In this work we have conducted the synthesis, the establishment of physical-chemical properties and subsequent Pass-screening of possible biological activity for new alkyl derivatives of 4-R-3-(morfolinometylen)-4H-1,2,4-triazole-5-thioles. According to t... see more

With the aim of obtaining new biologically active substances the synthesis of amides of 5-R-phenylamino-1,3,4-thiadiazole-2-yl-thioacetate acid and 5-phenylamino-1,3,4-thiadiazole-2-yl-thio-1-phenon has been conducted. As initial substances 5-R-phenylamin... see more

The synthesis of a series of new 4-amino-5-alkyl-1,2,4-triazole(4H)-3-yl thioacetanilides and 4-pyrrolyl-5-alkyl-1,2,4-triazole(4H)-3-yl thioacetanilides has been described in the article. The key intermediates – 4-amino-5-alkyl-3-mercapto-1,2,4-triazoles... see more

In this work we have conducted the synthesis, the establishment of physical-chemical properties and subsequent Pass-screening of possible biological activity for new alkyl derivatives of 4-R-3-(morfolinometylen)-4H-1,2,4-triazole-5-thioles. According to t... see more

The application of the [2+3]-cyclocondensation reaction for the synthesis of 2-pyrazoline substituted thiazolidinones, as well as bioisosteric pyrazoline-thiazoles has been analyzed. Following the literature data 4,5-dihydro- 1-carbothioamides are used as... see more

1 of 11.654 pages  |  10  records  |  more records»