Synthesis of new silylated sulfur-containing heterocycles through thionation of bis(acylsilanes) |
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| Authors: | Jean-Philippe Bouillon Charles Portella Alessandro Degl’Innocenti |
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| Institution: | a Laboratoire “Réactions Sélectives et Applications”, UMR CNRS 6519, Faculté des Sciences, Université de Reims, B.P. 1039, F-51687 Reims Cedex 2, France
b Dipartimento di Chimica Organica, ICCOM, via della Lastruccia 13, I-50019 Sesto Fiorentino (FI), Italy |
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| Abstract: | The thionation of bis(acylsilanes) with spacers of variable size with hexamethyldisilathiane under cobalt(II) chloride or trimethylsilyl triflate catalysis affords 2,5-bis(trialkylsilyl)-thiophenes, 2,6-bis(trialkylsilyl)-4H-thiopyrans and 2,7-bis(trialkylsilyl)-4,5-dihydrothiepine generally along with a minor amount of the corresponding oxo analogue. The synthesis of both symmetrical and unsymmetrical bis(trialkylsilyl) derivatives was achieved. |
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| Keywords: | acylsilanes thionation thiopirans dihydrothiepines |
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