1-(2-(4-methoxyphenoxy)ethyl)-4-methyl-1,4-cyclohexadiene | 169310-76-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 1-(2-(4-methoxyphenoxy)ethyl)-4-methyl-1,4-cyclohexadiene
• 英文别名: 1-Methoxy-4-[2-(4-methylcyclohexa-1,4-dien-1-yl)ethoxy]benzene
• CAS: 169310-76-3
• 化学式: C₁₆H₂₀O₂
• 分子量: 244.334
• InChiKey: CACUWHMBSWDYLI-UHFFFAOYSA-N

物化性质

• 沸点：
  366.4±30.0 °C(Predicted)
• 密度：
  1.022±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  18
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  1-(2-(4-methoxyphenoxy)ethyl)-4-methyl-1,4-cyclohexadiene 在 potassium osmate(VI) 、 (DHQD)2PYDZ 、 potassium carbonate 、 potassium hexacyanoferrate(III) 作用下， 以 水 、 叔丁醇 为溶剂， 反应 4.0h， 以62%的产率得到(1R,2R)-1-(2-(4-methoxyphenoxy)ethyl)-4-methyl-4-cyclohexene-1,2-diol
  参考文献：
  名称：

  均烯丙基醇衍生物的高度对映选择性和区域选择性催化二羟基化反应

  摘要：

  如先前提出的过渡态模型所预测的，由于芳基醚部分的有利影响，各种均烯丙基醇的对甲氧基苯基醚的催化二羟基化以优异的对映选择性进行，并且在二烯烃的情况下具有区域选择性。

  DOI：

  10.1016/0040-4039(95)00570-3
• 作为产物：
  描述：

  4-甲氧基苯酚 、 2-(4-methylcyclohexa-1,4-dien-1-yl)ethan-1-ol 在 三苯基膦 、 偶氮二甲酸二乙酯 作用下， 以 四氢呋喃 为溶剂， 以93%的产率得到1-(2-(4-methoxyphenoxy)ethyl)-4-methyl-1,4-cyclohexadiene
  参考文献：
  名称：

  The application of a mechanistic model leads to the extension of the Sharpless asymmetric dihydroxylation to allylic 4-methoxybenzoates and conformationally related amine and homoallylic alcohol derivatives.

  摘要：

  The scope and utility of the Sharpless asymmetric dihydroxylation has been expanded to include the use of allylic 4-methoxybenzoates as precursors of a wide variety of substituted chiral glycerol derivatives. The allylic 4-methoxybenzoyl group was found to be superior to other allylic alcohol protecting groups with respect to both yield and enantiomeric purity of the product. For example, asymmetric dihydroxylation of allyl 4-methoxybenzoate (6a) using the (DHQD)(2)PYDZ . OsO4 (1 . OsO4) catalyst system affords (S)-3-(4-methoxybenzoyloxy)-1,2-propanediol (7a) in >99% yield and 98% ee. The 4-methoxybenzoates of a variety of other allylic alcohols also serve as excellent substrates, in contrast to the parent alcohols themselves. The efficient asymmetric dihydroxylation of homoallylic 4-methoxyphenyl ethers (12a and 15), allyl 9-fluorenimine (18b), bis(homoallyl) 4-methoxybenzoate (14) and other structurally related substrates is also described. This methodology was developed under mechanistic guidance from the transition state model advanced earlier by us for the bis-cinchona alkaloid catalyzed asymmetric dihydroxylation reaction. The 4-methoxybenzoyl group functions not only to selectively protect one of the hydroxy groups of the product triol for subsequent synthetic manipulation but also to provide an extended binding group that participates in hydrophobic and aryl-aryl interactions with the U-shaped binding pocket of the (DHQD)(2)PYDZ . OsO4 catalyst (1 . OsO4), thereby enhancing enantioselectivity.

  DOI：

  10.1021/ja00149a003

文献信息

• A Direct and Efficient Stereocontrolled Synthetic Route to the Pseudopterosins, Potent Marine Antiinflammatory Agents
  作者：E. J. Corey、Scott E. Lazerwith

  DOI：10.1021/ja983041s

  日期：1998.12.1

  Described herein is a new synthetic route to pseudopterosin aglycone (3), a key intermediate for the synthesis of a group of antiinflammatory natural products including pseudopterosin A (1) and E (2). The pathway of synthesis starts with the abundant and inexpensive (S)-(−)-limonene and its long-known cyclic hydroboration product (4) and leads to the chiral hydroxy ketone 6. Conversion of 6 to 10 followed

  本文描述了拟珊瑚素苷元 (3) 的新合成路线，拟珊瑚素苷元是合成包括拟珊瑚素 A (1) 和 E (2) 在内的一组抗炎天然产物的关键中间体。合成途径始于丰富且廉价的 (S)-(-)-柠檬烯及其久负盛名的环状硼氢化产物 (4)，并生成手性羟基酮 6。6 转化为 10，然后进行新的芳香环化产生了 15，其经历了高度非对映选择性环化，以提供受保护的拟珊瑚素苷元 16。天然存在的拟珊瑚素如 1 和 2 很容易从这个关键中间体中获得。