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153.819  Articles
1 of 15.383 pages  |  10  records  |  more records»
Previously designated a comfortable and effective scheme of 3,7-disubstituted [1,2,4]triazolo[4,3-a]pyrazin-8(7H)-ones synthesis was spread to derivatives of ?-(7-aryl-8-oxo-7,8-dihydro[1,2,4]triazolo[4,3-a]pyrazin-3-yl) alkylcarboxylic acids. Our approac... see more

Previously designated a comfortable and effective scheme of 3,7-disubstituted [1,2,4]triazolo[4,3-a]pyrazin-8(7H)-ones synthesis was spread to derivatives of ?-(7-aryl-8-oxo-7,8-dihydro[1,2,4]triazolo[4,3-a]pyrazin-3-yl) alkylcarboxylic acids. Our approac... see more

Features of 5-trichloromethyl-2-aryl-5,6-dihydro-[1,2,4]triazolo[1,5-c]quinazolines formation as result of [5+1]-cyclocondensation of the corresponding [2-(3-aryl-1H-1,2,4-triazole-5-yl)phenyl]amines with chloral hydrate are described in the article. It h... see more

Writing is language ability that very important for all human life. Writing helps someone to think easily and to express all idea, thought and feeling existing in mind in written form. The purpose of this research is to explore 5W+1H Questions in enhancin... see more

Writing is language ability that very important for all human life. Writing helps someone to think easily and to express all idea, thought and feeling existing in mind in written form. The purpose of this research is to explore 5W+1H Questions in enhancin... see more

The work is devoted to the synthesis of new pyrrolo[2,3-d]pyrimidine-containing a-hydroxyphosphonic acids as precursors for the synthesis of potential biologically active compounds. The reaction between methyl 7-allyl-1,3dimethyl-2,4-dioxo-2,3,4,7-tetrahy... see more

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The features of the Stolle reaction in a series of substituted 2,2,4-trimethyl-1,2-bis (tetra) hydroquinoline have been investigated. When carrying out the reaction of oxalyl chloride not with 2,2,4-trimethyl-1,2-dihydroquinoline and 2,2,4-trimethyl-1,2,3... see more

1 of 15.383 pages  |  10  records  |  more records»