Notizen: Ein silacyclisches Triple-Ylid: 2.4.6-Tris-trimethylphosphoranyliden-1.3.5- trisilacyclohexan / A Silacyclic Triple-ylide : 2,4, 6-Tris-trimethylphosphoranylidene-1,3,5-trisilacyclohexane

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Abstract
From (chloromethyl)silane and trimethylphosphine a phosphonium salt [(CH3)3P–CH2SiH3]Cl is obtained, which can be converted into the ylide (CH3)3P=CHSiH3 upon transylidation with (CH3)3P = CH2. The silyl ylide is thermally unstable and looses hydrogen to give the title six-membered ring species.