Synthesis of novel spiro-condensed 2-amino-4 H -pyrans based on 1,2-benzoxathiin-4(3 H )-one 2,2-dioxide

Galina V. Grygoriv,Dmitry A. Lega,Lucjusz Zaprutko,Andrzej K. Gzella,Ewa Wieczorek-Dziurla,Valentine P. Chernykh,Leonid A. Shemchuk

Chemistry of Heterocyclic Compounds（2019）

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摘要

series of new spiro-condensed 2-amino-4 H -pyrans were synthesized by three-component interaction of 1,2-benzoxathiin-4(3 H )-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(3 H )-one 2,2-dioxide application in multicomponent transformations.

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关键词

1,2-benzoxathiin-4(3 H )-one 2,2-dioxide

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