[2-methoxy-5-[(2S)-oxiran-2-yl]phenoxy]-tri(propan-2-yl)silane | 179261-00-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: [2-methoxy-5-[(2S)-oxiran-2-yl]phenoxy]-tri(propan-2-yl)silane
• CAS: 179261-00-8
• 化学式: C₁₈H₃₀O₃Si
• 分子量: 322.52
• InChiKey: PJLLPASGZREUCY-GOSISDBHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.32
• 重原子数：
  22
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  31
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  [2-methoxy-5-[(2S)-oxiran-2-yl]phenoxy]-tri(propan-2-yl)silane 在 正丁基锂 、 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 反应 14.0h， 生成 白花前胡甲素
  参考文献：
  名称：

  Highly Enantioselective Synthesis of Natural Phyllodulcin

  摘要：

  (S)-[4-Methoxy-3-[(triisopropylsilyl)oxy]phenyl)oxirane (prepared from isovanillin by consecutive silylation, olefination, Sharpless asymmetric cis-dihydroxylation, and dehydration) reacted with [3-(methoxymethoxy)phenyl]lithium (prepared from 3-bromophenol by consecutive methoxymethylation and bromine - lithium exchange) to yield (R)-1-[4-methoxy-3-[(triisopropylsilyl)oxy]phenyl)-2-[3-(methoxymethoxy)phenyl] ethanol. The last compound underwent selective hydrogen-metal exchange with excess of butyllithium affording (after carbonation, lactonization, and deprotection of phenolic groups) the title compound [(R)-3,4-dihydro-8-hydroxy-3-(4-methoxy-3-hydroxyphenyl)-isocoumarin].

  DOI：

  10.1021/jo9603385
• 作为产物：
  描述：

  4-methoxy-3-(triisopropylsilyloxy)-benzaldehyde 在 吡啶 、 sodium hydroxide 、 AD-mix-α 、 正丁基锂 、 四丁基硫酸氢铵 作用下， 以 二氯甲烷 、 水 、 叔丁醇 为溶剂， 反应 23.25h， 生成 [2-methoxy-5-[(2S)-oxiran-2-yl]phenoxy]-tri(propan-2-yl)silane
  参考文献：
  名称：

  Highly Enantioselective Synthesis of Natural Phyllodulcin

  摘要：

  (S)-[4-Methoxy-3-[(triisopropylsilyl)oxy]phenyl)oxirane (prepared from isovanillin by consecutive silylation, olefination, Sharpless asymmetric cis-dihydroxylation, and dehydration) reacted with [3-(methoxymethoxy)phenyl]lithium (prepared from 3-bromophenol by consecutive methoxymethylation and bromine - lithium exchange) to yield (R)-1-[4-methoxy-3-[(triisopropylsilyl)oxy]phenyl)-2-[3-(methoxymethoxy)phenyl] ethanol. The last compound underwent selective hydrogen-metal exchange with excess of butyllithium affording (after carbonation, lactonization, and deprotection of phenolic groups) the title compound [(R)-3,4-dihydro-8-hydroxy-3-(4-methoxy-3-hydroxyphenyl)-isocoumarin].

  DOI：

  10.1021/jo9603385

文献信息

• Highly Enantioselective Synthesis of Natural Phyllodulcin
  作者：Alessio Ramacciotti、Rita Fiaschi、Elio Napolitano

  DOI：10.1021/jo9603385

  日期：1996.1.1

  (S)-[4-Methoxy-3-[(triisopropylsilyl)oxy]phenyl)oxirane (prepared from isovanillin by consecutive silylation, olefination, Sharpless asymmetric cis-dihydroxylation, and dehydration) reacted with [3-(methoxymethoxy)phenyl]lithium (prepared from 3-bromophenol by consecutive methoxymethylation and bromine - lithium exchange) to yield (R)-1-[4-methoxy-3-[(triisopropylsilyl)oxy]phenyl)-2-[3-(methoxymethoxy)phenyl] ethanol. The last compound underwent selective hydrogen-metal exchange with excess of butyllithium affording (after carbonation, lactonization, and deprotection of phenolic groups) the title compound [(R)-3,4-dihydro-8-hydroxy-3-(4-methoxy-3-hydroxyphenyl)-isocoumarin].