期刊
MENDELEEV COMMUNICATIONS
卷 26, 期 1, 页码 72-74出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mencom.2016.01.028
关键词
-
资金
- Russian Science Foundation [14-13-00388]
Chromone and chromone-3-carboxylic acid react with cyanoacetic acid hydrazide in the presence of NaOEt in boiling ethanol to form 6-(2-hydroxyphenyl)-1H-pyrazolo[3,4-b]pyridin-3(2H)-one (58-62% yields), whereas reaction between chromone-3-carboxamides and cyanoacetic acid hydrazide under the same conditions affords 1-amino-2,5-dioxo-2,5-dihydro-1H-chromeno[4,3-b]pyridine-3-carbonitriles (50-67% yields).
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