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Synthesis of 2,3,4-Trisubstituted Chromans Via Nucleophilic Addition of N-, C-, and SNucleophiles to 3-Nitro-2-Trihalomethyl-2H-Chromenes. Stereochemical and Conformational Preferences
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pp.616-620 (5) Authors: V. Y. Korotaev, V. Y. Sosnovskikh, I. B. Kutyashev, M. I. Kodess
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| Abstract |
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Reactions of N-, C-, and S-nucleophiles with 3-nitro-2-trifluoro(or trichloro)methyl-2H-chromenes proceeded via nucleophilic addition at the double bond to give 2,3,4-trisubstituted chromans in good to moderate yields. Stereochemical and conformational preferences of 2,3,4-trisubstituted chromans were studied. |
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Keywords:
nitro- h-chromenes, s-nucleophiles, nucleophilic addition, trisubstituted chromans |
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Affiliation:
Department of Chemistry,Ural State University, 620083 Ekaterinburg, Russia. |
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