tetrakis{[2-methyl-1-(trimethylsilyloxy)prop-1-enyloxy]methyl}methane | 1346785-90-7

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: tetrakis{[2-methyl-1-(trimethylsilyloxy)prop-1-enyloxy]methyl}methane
• 英文别名: C(MTS)4；Trimethyl-[2-methyl-1-[3-(2-methyl-1-trimethylsilyloxyprop-1-enoxy)-2,2-bis[(2-methyl-1-trimethylsilyloxyprop-1-enoxy)methyl]propoxy]prop-1-enoxy]silane；trimethyl-[2-methyl-1-[3-(2-methyl-1-trimethylsilyloxyprop-1-enoxy)-2,2-bis[(2-methyl-1-trimethylsilyloxyprop-1-enoxy)methyl]propoxy]prop-1-enoxy]silane
• CAS: 1346785-90-7
• 化学式: C₃₃H₆₈O₈Si₄
• 分子量: 705.24
• InChiKey: IHZXODSZHQHJCC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  10.45
• 重原子数：
  45
• 可旋转键数：
  20
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.76
• 拓扑面积：
  73.8
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  季戊四醇 在 正丁基锂 、 三乙胺 、 二异丙胺 作用下， 以 四氢呋喃 为溶剂， 生成 tetrakis{[2-methyl-1-(trimethylsilyloxy)prop-1-enyloxy]methyl}methane
  参考文献：
  名称：

  Core-First Synthesis of Three-, Four-, and Six-Armed Star-Shaped Poly(methyl methacrylate)s by Group Transfer Polymerization Using Phosphazene Base

  摘要：

  The core-first synthesis of three-, four-, and six-armed star-shaped poly(methyl methacrylate)s (PMMAs) with predicted molecular weights and narrow molecular weight distributions (M-w/M(n)s) was carried out by the t-BuP4-catalyzed group transfer polymerization (GTP) of methyl methacrylate (MMA) using the newly designed silyl enolates, such as 1,1,1-tris[2-methyl-1-(trimethylsilyloxy)prop-1-enyloxymethyl]propane (E(C(MTS)(3)), tetrakis{[2-niethyl-1-(trimethylsilyloxy)prop-1-enyloxy]methyl}methane (C(MTS)(4)), and bis{2,2,2-tris[2,methyl-1-(trimethylsilyloxy)prop-1-enyloxy]ethyl}ether (O-(C(MTS)(3))(2)), respectively. The absolute molecular weight (M-w(MALS)) of the obtained polymers proportionally increased with the increasing [MMA](0)/[initiator](0) ratio, and the highest molecular weight was ca. 132 kg mol(-1). Characterizations for the star-shaped PMMAs were conducted by cleavage and intrinsic viscosity [eta] experiments. Cleavage experiments of the star-shaped PMMAs provided the evidence for homogeneous growth of the each arm in the t-Bu-P-4-catalyzed GTP. The number of arm determined from the shrinking factors (g') of [eta] also supported the successful syntheses of the star-shaped polymers by the present core-first method. The versatility of this core-first method toward other methacrylic monomers was confirmed by the t-BuP4-catalyzed GTPs of allyl methacrylate (AMA), stearyl methacrylate (SMA), and 2-(dimethylamino)ethyl methacrylate (DMAEMA) using C(MTS)(4) as an initiator leading to well-defined star-shaped polymers.

  DOI：

  10.1021/ma202103d

文献信息

• Core-First Synthesis of Three-, Four-, and Six-Armed Star-Shaped Poly(methyl methacrylate)s by Group Transfer Polymerization Using Phosphazene Base
  作者：Yougen Chen、Keita Fuchise、Atsushi Narumi、Seigou Kawaguchi、Toshifumi Satoh、Toyoji Kakuchi

  DOI：10.1021/ma202103d

  日期：2011.12.13

  The core-first synthesis of three-, four-, and six-armed star-shaped poly(methyl methacrylate)s (PMMAs) with predicted molecular weights and narrow molecular weight distributions (M-w/M(n)s) was carried out by the t-BuP4-catalyzed group transfer polymerization (GTP) of methyl methacrylate (MMA) using the newly designed silyl enolates, such as 1,1,1-tris[2-methyl-1-(trimethylsilyloxy)prop-1-enyloxymethyl]propane (E(C(MTS)(3)), tetrakis[2-niethyl-1-(trimethylsilyloxy)prop-1-enyloxy]methyl}methane (C(MTS)(4)), and bis2,2,2-tris[2,methyl-1-(trimethylsilyloxy)prop-1-enyloxy]ethyl}ether (O-(C(MTS)(3))(2)), respectively. The absolute molecular weight (M-w(MALS)) of the obtained polymers proportionally increased with the increasing [MMA](0)/[initiator](0) ratio, and the highest molecular weight was ca. 132 kg mol(-1). Characterizations for the star-shaped PMMAs were conducted by cleavage and intrinsic viscosity [eta] experiments. Cleavage experiments of the star-shaped PMMAs provided the evidence for homogeneous growth of the each arm in the t-Bu-P-4-catalyzed GTP. The number of arm determined from the shrinking factors (g') of [eta] also supported the successful syntheses of the star-shaped polymers by the present core-first method. The versatility of this core-first method toward other methacrylic monomers was confirmed by the t-BuP4-catalyzed GTPs of allyl methacrylate (AMA), stearyl methacrylate (SMA), and 2-(dimethylamino)ethyl methacrylate (DMAEMA) using C(MTS)(4) as an initiator leading to well-defined star-shaped polymers.