- Preliminary communication. Silacyclopropanes from the reaction of silenes with Wittig reagents
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The stable silene (Me3Si)2Si=C(OSiMe3)Ad (Ad = adamantyl) was found to react with the phosphorous ylid Ph3P+CH2- or its sulfur analog to form the related silacyclopropane, as shown by NMR spectroscopy and by derivatization with methanol or acetophenone.
- Brook, A. G.,MacMillan, Andrew
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- Stable Solid Silaethylenes
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A solid silaethylene, 1,1-bis(trimethylsilyl)-2-(trimethylsiloxy)-1-(1-adamantyl)-1-silaethene (2c), has been isolated from the photolysis of the isomeric acylsilane.The silaethylene was characterized by IR, Raman, UV, 1H NMR, 13C NMR, 29Si NMR, and mass spectroscopy and by its ionization potential.The crystal structure shows a slightly twisted molecule with a silicn-carbon double-bond length of 1.764 Angstroem.The molecule smokes vigorously in air, yielding a cyclic trisiloxane and the silyl ester of adamantane-1-carboxylic acid.Other reactions and comparisons with other silaethylenes in solution are described.In addition, 1,1-bis(trimethylsilyl)-2-(trimethylsiloxy)-2-(1,1-diethylpropyl)-1-silaethene (2b) has been obtained as a solid.
- Brook, A. G.,Nyburg, S. C.,Abdesaken, Fereydon,Gutenkunst, Brigitte,Gutenkunst, Gerhard,et al.
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p. 5667 - 5672
(2007/10/02)
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- A Solid Silaethene: Isolation and Characterization
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The first reported solid silaethene, m.p. 95 deg C, stable at room temperature under argon, but highly reactive in air has been isolated and characterized by i.r., n.m.r. and mass spectrometry.
- Brook, Adrian G.,Abdesaken, Fereydon,Gutekunst, Brigitte,Gutekunst, Gerhard,Kallury, R. Krishna
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p. 191 - 192
(2007/10/02)
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