Search results for "alkenes and alkynes"

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Reactions of Alkenes and Alkynes with an Acyclic Silylene and Heavier Tetrylenes under Ambient Conditions

2014

Cycloaddition reactions of the acyclic silylene Si(SAriPr4)2 (AriPr4 = C6H3-2,6(C6H3-2,6-iPr2)2) with a variety of alkenes and alkynes were investigated. Its reactions with the alkynes phenylacetylene and diphenylacetylene and the diene 2,3-dimethyl-1,3-butadiene yielded silacycles (AriPr4S)2tiebar above startSi(CH═tiebar above endCPh) (1), (AriPr4S)2tiebar above startSi(PhC═tiebar above endCPh) (2), and (AriPr4S)2tiebar above startSiCH2CMeCMetiebar above endCH2 (3) at ambient temperature. The compounds were characterized by X-ray crystallography, 1H, 13C, and 29Si NMR spectroscopy, and IR spectroscopy. No reaction was observed with more substituted alkenes such as propene, (Z)-2-butene, te…

DieneTrimethylsilylacyclic silyleneAlkynealkeenit ja alkyynitPhotochemistryMedicinal chemistryInorganic Chemistrychemistry.chemical_compoundraskaammat tetryleenitalkenes and alkynesCyclopenteneambient conditionssykloadditioreaktiotPhysical and Theoretical Chemistryasyklinen silyleeniDiphenylacetyleneta116chemistry.chemical_classificationOrganic ChemistrySilylenecyloaddition reactionsCycloadditionPhenylacetylenechemistrynormaalit ympäristön olosuhteethevier tetrylenes

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