(4R,5R)-4,5-dibutyl-2-ethoxy-1,3-dioxolane | 167259-31-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 环氧化物
• 英文名称: (4R,5R)-4,5-dibutyl-2-ethoxy-1,3-dioxolane
• CAS: 167259-31-6
• 化学式: C₁₃H₂₆O₃
• 分子量: 230.348
• InChiKey: STBWBDFNJKWQTD-VXGBXAGGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.47
• 重原子数：
  16.0
• 可旋转键数：
  8.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  27.69
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  (4R,5R)-4,5-dibutyl-2-ethoxy-1,3-dioxolane 在 sodium azide 、 五氯化磷 、 potassium carbonate 、 氯化铵 作用下， 以 甲醇 、 丙醇 、 二氯甲烷 、 水 为溶剂， 反应 23.0h， 生成
  参考文献：
  名称：

  On the use of C2-symmetric aziridines as chiral auxiliaries

  摘要：

  A systematic study has been made of the utility of readily available C-2-symmetric aziridines as auxiliaries for asymmetric alkylation and aldol reactions of amide enolates. Aziridines with suitably placed oxygen atoms in the side chains proved to be useful for alkylation reactions (d.e. values up to >98%) and the results are explained in terms of an intramolecularly chelated Z-enolate species, which could be observed directly by means of NMR spectroscopy. In contrast, aziridine auxiliaries lacking side-chain oxygens performed better in aldol reactions (syn selectivity up to 98% d.e.) for which a Zimmerman-Traxler transition state is proposed. After reaction, the auxiliaries can be cleaved off nondestructively under mild conditions to afford either optically pure aldehydes or carboxylic acids.

  DOI：

  10.1016/s0040-4020(01)85546-0
• 作为产物：
  描述：

  反-5-癸烯 在 帕利哌酮杂质13 、 AD-mix-β 、 对甲苯磺酸 作用下， 以 水 、 甲苯 、 叔丁醇 为溶剂， 反应 21.0h， 生成 (4R,5R)-4,5-dibutyl-2-ethoxy-1,3-dioxolane
  参考文献：
  名称：

  On the use of C2-symmetric aziridines as chiral auxiliaries

  摘要：

  A systematic study has been made of the utility of readily available C-2-symmetric aziridines as auxiliaries for asymmetric alkylation and aldol reactions of amide enolates. Aziridines with suitably placed oxygen atoms in the side chains proved to be useful for alkylation reactions (d.e. values up to >98%) and the results are explained in terms of an intramolecularly chelated Z-enolate species, which could be observed directly by means of NMR spectroscopy. In contrast, aziridine auxiliaries lacking side-chain oxygens performed better in aldol reactions (syn selectivity up to 98% d.e.) for which a Zimmerman-Traxler transition state is proposed. After reaction, the auxiliaries can be cleaved off nondestructively under mild conditions to afford either optically pure aldehydes or carboxylic acids.

  DOI：

  10.1016/s0040-4020(01)85546-0

文献信息

• Tanner David, Birgersson Carin, Gogoll Adolf, Luthman Kristina, Tetrahedron, 50 (1994) N 32, S 9797-9824
  作者：Tanner David, Birgersson Carin, Gogoll Adolf, Luthman Kristina

  DOI：——

  日期：——