Hurkes Natascha, Bruhn Clemens, Belaj Ferdinand, Pietschnig Rudolf
Universität Kassel , Institut für Chemie und CINSaT, Heinrich-Plett-Straße 40, 34132 Kassel, Germany.
Karl-Franzens-Universität , Institut für Chemie, NAWI Graz, Schubertstraße 1, 8010 Graz, Austria.
Organometallics. 2014 Dec 22;33(24):7299-7306. doi: 10.1021/om5010918. Epub 2014 Dec 3.
Controlled condensation reactions of tertiary silanetriols CH(CH) (CH)CSi(OH) (-; = 1-5) in the presence of trifluoroacetic acid and the hydrolysis of CH(CH)(CH)CSiCl () lead to the selective formation of the corresponding disiloxane tetrols [CH(CH) (CH)CSi(OH)]O (-; = 1-6) in good yields. The TBAF-driven condensation reactions of the silanetriols CH(CH) (CH)CSi(OH) (-; = 0-2) as well as of the disiloxane-1,1,3,3-tetrol ( = 3) yield in the selective formation of the first T cages bearing tertiary carbon substituents, CH(CH) (CH)C (-; = 0-3), which was not possible via the condensation of their alkoxysilane counterparts so far. The resulting compounds - and - have been characterized by multinuclear NMR, MS, and single-crystal X-ray diffraction.
叔硅三醇CH(CH)(CH)CSi(OH)（-；= 1 - 5）在三氟乙酸存在下的受控缩合反应以及CH(CH)(CH)CSiCl（）的水解反应，能以良好产率选择性地生成相应的二硅氧烷四醇[CH(CH)(CH)CSi(OH)]O（-；= 1 - 6）。硅三醇CH(CH)(CH)CSi(OH)（-；= 0 - 2）以及二硅氧烷 - 1,1,3,3 - 四醇（= 3）在四丁基氟化铵驱动的缩合反应中，选择性地生成了首个带有叔碳取代基的T笼CH(CH)(CH)C（-；= 0 - 3），而到目前为止，通过其烷氧基硅烷对应物的缩合反应无法实现这一点。所得化合物 - 和 - 已通过多核NMR、MS和单晶X射线衍射进行了表征。
