Synthesis of 2-diphenylphosphinoyl-3,5-diaryl-3,4-dihydro-2H-telluropyrans by reaction of chalcones with bis[(diphenylphosphinoyl)methyl]telluride |
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| Authors: | Claudio C Silveira Francieli Rinaldi Teodoro S Kaufman |
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| Institution: | a Departamento de Química, Universidade Federal de Santa Maria, 97105.900 Santa Maria, RS, Brazil
b Instituto de Química Rosario (CONICET-UNR), Suipacha 531, S2002LRK Rosario, Argentina |
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| Abstract: | The NaH-promoted tandem Michael addition/intramolecular Wittig-Horner reaction of bis(diphenylphosphinoyl) methyl]telluride with chalcones stereoselectively afforded trans-2-diphenylphosphinoyl-3,5-diaryl-3,4-dihydro-2H-telluropyran derivatives in 51-72% yield, under mild conditions. |
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| Keywords: | Wittig-Horner reaction Tandem reactions 3 4-Dihydro-2H-telluropyrans Vinylic tellurides |
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