tetraphenyltetrahydroxycyclotetrasiloxane | 3450-18-8

• 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: tetraphenyltetrahydroxycyclotetrasiloxane
• 英文别名: cis-tetraphenylcyclotetrasiloxanetetraol；[Ph(OH)SiO]4；cis-cis-cis-2.4.6.8-Tetraphenyl-cyclotetrasiloxantetrol；Tetrol；Tetrahydroxy(tetraphenyl)cyclotetrasiloxane；2,4,6,8-tetrahydroxy-2,4,6,8-tetraphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
• CAS: 3450-18-8
• 化学式: C₂₄H₂₄O₈Si₄
• 分子量: 552.792
• InChiKey: FTCGRHVDXDCFHR-UHFFFAOYSA-N

物化性质

• 熔点：
  173-176 °C (decomp)
• 沸点：
  575.9±33.0 °C(Predicted)
• 密度：
  1.36±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -0.58
• 重原子数：
  36
• 可旋转键数：
  4
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  118
• 氢给体数：
  4
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  tetraphenyltetrahydroxycyclotetrasiloxane 在 苄基三甲基氢氧化铵 作用下， 以 甲醇 、 苯 为溶剂， 反应 12.0h， 以95%的产率得到氢基-POSS
  参考文献：
  名称：

  Cage octaphenylsilsesquioxane from cyclic tetrasiloxanetetraol and its sodium salt

  摘要：

  Cage octasilsesquioxane with various substituents were obtained by the condensation reaction of various all-cis cyclic tetrasiloxanetetraol (R-T-4-tetraol, R = phenyl, p-tolyl, i-butyl, naphthyl) with benzyltrimethylammonium hydroxide or tetrabutylammonium fluoride as a catalyst. Co-condensation of phenyl-T-4-tetraol with phenyl-d(5)-T-4-tetraol or with p-tolyl-T-4-tetraol were found to proceed through reshuffling process evidenced by scrambling of the substituents. Pure octa(4-bromo-substituted phenyl)octasilsesquioxane was synthesized for the first time from tetra(4-bromo-substituted phenyl)tetrasiloxanetetraol sodium salt. (C) 2010 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jorganchem.2010.01.013
• 作为产物：
  描述：

  苯基三甲氧基硅烷 在 水 、 sodium hydroxide 作用下， 以 异丙醇 为溶剂， 反应 20.0h， 以40%的产率得到tetraphenyltetrahydroxycyclotetrasiloxane
  参考文献：
  名称：

  Cyclic Tetrasiloxanetetraols: Formation, Isolation, and Characterization

  摘要：

  在等摩尔量的水和氢氧化钠存在下，具有各种取代基的三烷氧基硅烷水解生成环状四硅氧烷四醇，其中全顺异构体是主要部分。苯基衍生物的所有立体异构体都是通过全顺异构体在盐酸存在下发生异构化而产生的，并进行了分离和鉴定。

  DOI：

  10.1246/cl.2009.364

文献信息

• Synthesis and Structures of the First Titanium(IV) Complexes with Cyclic Tetrasiloxide Ligands: Incomplete and Complete Cage Titanosiloxanes
  作者：Masakazu Hirotsu、Shinsuke Taruno、Takashi Yoshimura、Keiji Ueno、Masafumi Unno、Hideyuki Matsumoto

  DOI：10.1246/cl.2005.1542

  日期：2005.11

  The first titanium(IV) complexes with cyclic tetrasiloxide ligands, [Ti(L1H)(OSiMe3)]2(H2O) (1) and (CpTiCl)4(L2)2 (2), were synthesized using the all-cis isomer of cyclotetrasiloxanetetraols R4(Si...

  第一个钛 (IV) 配合物与环状四硅氧化物配体 [Ti(L1H)(OSiMe3)]2(H2O) (1) 和 (CpTiCl)4(L2)2 (2)，是使用全顺式异构体合成的环四硅氧烷四醇R4(Si...
• Synthesis and Characterization of Functionalizable Silsesquioxanes with Ladder-type Structures
  作者：Yujia Liu、Kazuki Onodera、Nobuhiro Takeda、Armelle Ouali、Masafumi Unno

  DOI：10.1021/acs.organomet.9b00597

  日期：2019.11.25

  quantitatively, possibly leading to tetrahalide ladder structures. All reported functional laddersiloxanes LS (LS-vinyl4, LS-allyl4, LS-Cl4, and LS-I4) thus constitute promising building blocks for more complex inorganic–organic hybrid materials.

  合成并表征了新颖的四乙烯基和四烯丙基取代的梯形硅氧烷。结果表明，外围烯烃可以成功地进行定量的氢化硅烷化，可能导致四卤化物阶梯结构。因此，所有报道的功能性梯形硅氧烷LS（LS-乙烯基4，LS-烯丙基4，LS-Cl 4和LS-1 4）构成了更复杂的无机-有机杂化材料的有前途的基石。
• BINOL and triazole-containing Janus rings and 29-8-29-membered tricyclic ladder-type hybridized siloxane: application in the fluorescence sensing of anions
  作者：Zhanjiang Zheng、Niyaz Yagafarov、Zheng Xu、Armelle Ouali、Nobuhiro Takeda、Yujia Liu、Masafumi Unno

  DOI：10.1039/d3dt01320k

  日期：——

  A new BINOL and triazole containing 29-8-29-membered tricyclic ladder type siloxane was prepared.

  制备了一种含有 29-8-29 元三环阶梯型硅氧烷的新型 BINOL 和三唑。
• Synthetic application of silicates/silanolates and their hydrolyzed polysilanol siloxanes for polyhedral oligomeric silsesquioxanes (POSSs)
  作者：Yoshiteru Kawakami、Hirofumi Seino、Kazushi Ohtaki、Yoshio Kabe

  DOI：10.1002/hc.21373

  日期：2017.5

  Several types of silicate and their hydrolyzed polysilanols were applied to the synthesis of polyhedral oligomeric silsesquioxanes (POSSs). Silicate cubic octasilicate [Si8O20](8-) 5 was silylated with trimethylchlorosilane to yield the incompletely trimethylsilylated cubic octasilicate [Si8O20](SiMe3)(7)H 1b bearing one silanol in addition to the totally trimethylsilylated derivative [Si8O20](SiMe3)(8) 1a. Further silylation of the monosilanol 1b with dimethylchlorosilane and ,-hydridochlorooctamethyltetrasiloxane resulted in the formation of POSSs 1c,d, which have hydrosilyl groups as elongated siloxane side chain. Attempts to generate an amino-substituted POSS via chloromethyldimethylsilylation of silicate 5 followed by reaction with amine as well as lithium amide failed. Amino-substitution was accomplished via the use of amine as a catalyst for the capping reaction of incompletely condensed trisilanol 10b with -aminopropyltrimethoxysilane affording mono amino-functionalized POSSs 2b,c in moderate yields. Another group of silanolates 7-9 was hydrolyzed with AcOH or HCl to give the corresponding cyclic polysilanol siloxanes 11a-c, respectively. Amine-catalyzed condensation of several of these polysilanol siloxanes 11a-c resulted in the formation of POSSs in high yields depending on the structure of substrates.
• MELADZE S. M.; MUKBANIANI O. V.; MAKAROVA N. N.; XANANASHVILI L. M., ZH. OBSHCH. XIMII, 1980, 50, HO 11, 2493-2499
  作者：MELADZE S. M.、 MUKBANIANI O. V.、 MAKAROVA N. N.、 XANANASHVILI L. M.

  DOI：——

  日期：——