76557-75-0Relevant academic research and scientific papers
DIORGANOSILACYCLOPENT-3-ENE DERIVATIVES FROM DIORGANODICHLOROSILANES AND BUTADIENEMAGNESIUM: EVIDENCE FOR CROTYL-GRIGNARD INTERMEDIATES
Richter, Wolf Juergen
, p. 45 - 50 (1985)
Reactions of substituted dichlorosilanes, R1R2SiCl2 (R1=CH3, R2=Ph, vinyl), with butadienemagnesium yield methoxybutenylsilane derivatives and silacyclopent-3-enes after treatment with methanol at -70 deg C.For R=vinyl, a substituted cyclodeca-3,8-diene is formed in addition to the 1,4-disilylated butenylic species.The nature of the range of products suggests that silyl-substituted crotyl-Grignard compounds are the major intermediates.
PHOTOLYSIS OF ORGANOPOLYSILANES. THE REACTION OF PHOTOCHEMICALLY GENERATED METHYLPHENYLSILYLENE WITH CONJUGATED DIENES
Ishikawa, Mitsuo,Nakagawa, Ken-Ichi,Enokida, Ryuichi,Kumada, Makoto
, p. 151 - 163 (2007/10/02)
Photolysis of 2-phenylheptamethyltrisilane (I) in the presence of acyclic and cyclic conjugated dienes has been investigated using both a high-pressure mercury lamp with a quartz filter and a low-pressure mercury lamp with a Vycor filter.Irradiation of I in the presence of 1,3-butadiene, isoprene or 2,3-dimethylbutadiene with a high-pressure mercury lamp gave a product arising from photochemical isomerization of a silacyclopropane derivative and a compound apparently formed by 1,4-silylene addition, along with a 1/1 "ene" adduct of the diene to a photo-rearranged intermediate containing the silicon-carbon double bond.Irradiation of I in the presence of the conjugated diene with a low-pressure mercury lamp, followed by treatment of the product with methanol, afforded a methoxysilane arising from methanolysis of the corresponding silacyclopropane, together with the isomerization product, silacyclopentene and rearranged addition product.Irradiation of I in the presence of cyclopentadiene with a high-pressure mercury lamp produced methylphenylsilylcyclopentadiene, while irradiation of a similar mixture with a low-pressure mercury lamp followed by treatment with methanol gave 4-(methoxymethylphenylsilyl)-1-cyclopentene.With 1,3-cyclooctadiene, the photochemically generated methylphenylsilylene afforded many types of addition product.Photolysis of I in the presence of 1,3-cyclohexadiene, however, afforded none of the silylene addition products.
