cheminform abstract: silicon tethered alkenyl transfer and type i ene reactions

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2001 organo-silicon compounds organo-silicon compounds S 0060 09 - 152 Silicon Tethered Alkenyl Transfer and Type I Ene Reactions. A range of vinyl silanes are prepared and their application in ene cyclization reactions is investigated. The investigations show that ene cyclization of vinyl silane precursors is not a viable process, but desilylative alkenyl transfer is the preferred reaction mode. However, type I ene cyclizations are found to be successful for allylsilane precursors like (IX) and (XII) resulting in the stereoselective formation of silacyclohexanols. — (ROBERTSON, JEREMY; O’CONNOR, GARRY; RINGROSE, CAROLINE L.; MIDDLETON, DONALD S.; Tetrahedron 56 (2000) 42, 8321-8333; Dyson Perrins Lab., Dep. Chem., Univ. Oxford, Oxford OX1 3QY, UK; EN) 1

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Page 1: ChemInform Abstract: Silicon Tethered Alkenyl Transfer and Type I Ene Reactions

2001 organo-silicon compounds

organo-silicon compoundsS 0060

09 - 152Silicon Tethered Alkenyl Transfer and Type I Ene Reactions. —A range of vinyl silanes are prepared and their application in ene cyclizationreactions is investigated. The investigations show that ene cyclization of vinylsilane precursors is not a viable process, but desilylative alkenyl transfer isthe preferred reaction mode. However, type I ene cyclizations are found tobe successful for allylsilane precursors like (IX) and (XII) resulting in thestereoselective formation of silacyclohexanols. — (ROBERTSON, JEREMY;O’CONNOR, GARRY; RINGROSE, CAROLINE L.; MIDDLETON, DONALDS.; Tetrahedron 56 (2000) 42, 8321-8333; Dyson Perrins Lab., Dep. Chem.,Univ. Oxford, Oxford OX1 3QY, UK; EN)

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