...
首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Synthesis and reactivity towards DIBAL-H of cyclo-siloxanes cyclo-[R2SiOSi(Ot-Bu)(2)O](2), cyclo-(t-BuO)(2)Si(OSiR2)(2)O, and cyclo-R2Si[OSi(Ot-Bu)(2)](2)O (R = Me, Ph)
【24h】

Synthesis and reactivity towards DIBAL-H of cyclo-siloxanes cyclo-[R2SiOSi(Ot-Bu)(2)O](2), cyclo-(t-BuO)(2)Si(OSiR2)(2)O, and cyclo-R2Si[OSi(Ot-Bu)(2)](2)O (R = Me, Ph)

机译:环硅氧烷环-[R2SiOSi(Ot-Bu)(2)O](2),环-(t-BuO)(2)Si(OSiR2)(2)O和环的合成及其对DIBAL-H的反应-R2Si [OSi(Ot-Bu)(2)](2)O(R = Me,Ph)

获取原文
获取原文并翻译 | 示例
           

摘要

The six-, eight- and twelve-membered cyclo-siloxanes, cyclo-[R2SiOSi(Ot-Bu)(2)O](2) (R = Me (1), Ph (2)), cyclo-(t-BUO)(2)-Si(OSiR2)(2)O (R = Me (3), Ph (4)), cyclo-R2Si[OSi(Ot-Bu)(2)](2)O (R = Me (5), Ph (6)) and cyclo-[(t-BuO)(2)Si(OSiMe2)(2)O](2) (3a) were synthesized in high yields by the reaction of (t-BUO)2Si(OH)2 and [(t-BuO)(2)SiOH](2)O with R2SiCl2 and (R2SiCl)(2)O (R = Me, Ph). Compounds 1-6 were characterized by solution and solid-state Si-29 NMR spectroscopy, electrospray mass spectrometry and osmometric molecular weight determination. The molecular structure of 4 has been determined by single crystal X-ray diffraction and features a six-membered cyclo-siloxane ring that is essentially planar. The reduction of 1-6 with i-Bu2AlH (DIBAL-H) led to the formation of the metastable aluminosiloxane (t-BUO)(2)Si(OAli-Bu-2)(2) (7) along with Me2SiH2 and Ph2SiH2. [References: 41]
机译:六元,八元和十二元环硅氧烷,环-[R2SiOSi(Ot-Bu)(2)O](2)(R = Me(1),Ph(2)),环-(t- BUO)(2)-Si(OSiR2)(2)O(R = Me(3),Ph(4)),环-R2Si [OSi(Ot-Bu)(2)](2)O(R = Me (5),Ph(6))和环-[(t-BuO)(2)Si(OSiMe2)(2)O](2)(3a)通过(t-BUO)反应合成2Si(OH)2和[(t-BuO)(2)SiOH](2)O与R2SiCl2和(R2SiCl)(2)O(R = Me,Ph)。通过溶液和固态Si-29 NMR光谱,电喷雾质谱和渗透压分子量测定来表征化合物1-6。 4的分子结构已通过单晶X射线衍射确定,并具有基本为平面的六元环硅氧烷环。用i-Bu2AlH(DIBAL-H)还原1-6导致形成亚稳态的铝硅氧烷(t-BUO)(2)Si(OAli-Bu-2)(2)(7)以及Me2SiH2和Ph2SiH2 。 [参考:41]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号