Dimethoxysilylene (2) reacts with acetylene or dimethylacetylene to form 1,4-disalacyclohexadienes in very good yields. The known addition reactions of dichloro- or dimethylsilylene with olefins cannot be carried out, with the exception of the addition to 2,3-dimethylbutadiene.
1,4-Disilabenzol. - Dimethoxysilylen als idealer synthesebaustein
作者:Günther Maier、Klaus Schöttler、Hans Peter Reisenauer
DOI:10.1016/s0040-4039(00)89297-7
日期:1985.1
MAIER, G.;SCHOTTLER, K.;REISENAUER, H. P., TETRAHEDRON LETT., 1985, 26, N 34, 4079-4082
作者:MAIER, G.、SCHOTTLER, K.、REISENAUER, H. P.
DOI:——
日期:——
Far-Infrared, Combination Band, and Raman Spectra of the Ring-Puckering Vibration of 1,4-Disilacyclohexa-2,5-diene
作者:Arnold del Rosario、Ralf Bitschenauer、Marwan Dakkouri、Kristjan Haller、Jaan Laane
DOI:10.1021/jp983439a
日期:1998.12.1
The far-infrared spectrum of 1,4-disilacyclohexa-2,5-diene shows a series of four closely spaced bands originating at 70.5 cm(-1) resulting from the ring-puckering vibration. Four mid-infrared bands near 2214 cm(-1) result from combinations of the puckering with the Raman active B-2g SiH2 antisymmetric stretch at 2143.2 cm(-1), and seven difference bands near 2083 cm(-1) result from combinations with the Raman active A(g) SiH2 symmetric stretch at 2154.0 cm(-1). The ring-puckering transitions result from a single-minimum potential energy function, V(cm(-1)) = 1.23 x 10(4)x(2) + 2.40 x 10(4)x,(4) where x is the puckering coordinate. The molecule is planar and less rigid than 1,4-cyclohexadiene, thus apparently showing no unusual interactions between the silicon atoms and the C=C pi systems.