SYNTHESIS OF NOVEL SPIRO-CONDENSED 2-AMINO-4<i>H</i>-PYRANS BASED ON 1,2-BENZOXATHIIN-4(3<i>H</i>)-ONE 2,2-DIOXIDE
DOI:
https://doi.org/10.1007/4772Ключевые слова:
active methylene nitrile, 1, 2-benzoxathiin-4(3H)-one 2, 2-dioxide, isatin, ninhydrin, spiro compounds, multicomponent reactionsАннотация
A series of new spiro-condensed 2-amino-4H-pyrans were synthesized by three-component interaction of 1,2-benzoxathiin-4(3H)-one 2,2-dioxide, malononitrile, and cyclic carbonyls in moderate to high yields. This is one of the first examples of 1,2-benzoxathiin-4(3H)-one 2,2-dioxide application in multicomponent transformations.Загрузки
Опубликован
2019-04-11
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Раздел
Оригинальные статьи