cyclo-[Ph2SiOSi(Ot-Bu)2O]2 | 524678-75-9

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: cyclo-[Ph2SiOSi(Ot-Bu)2O]2
• 英文别名: 2,2,6,6-Tetrakis[(2-methylpropan-2-yl)oxy]-4,4,8,8-tetraphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane；2,2,6,6-tetrakis[(2-methylpropan-2-yl)oxy]-4,4,8,8-tetraphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
• CAS: 524678-75-9
• 化学式: C₄₀H₅₆O₈Si₄
• 分子量: 777.222
• InChiKey: ZBNNVTKLQGWUQM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.71
• 重原子数：
  52
• 可旋转键数：
  12
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  73.8
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  cyclo-[Ph2SiOSi(Ot-Bu)2O]2 、 diisobutylaluminium hydride 以 四氢呋喃 、 氘代甲苯 为溶剂， 生成
  参考文献：
  名称：

  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.

  DOI：

  10.1002/1521-3749(200213)628:13<2948::aid-zaac2948>3.0.co;2-7

文献信息

• ——
  作者：Jens Beckmann、Dainis Dakternieks、Andrew Duthie、Edward R. T. Tiekink

  DOI：10.1002/1521-3749(200213)628:13<2948::aid-zaac2948>3.0.co;2-7

  日期：——

  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.