hexadecyl 3-(1H-indol-3-yl)propanoate | 1421957-26-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吲哚及其衍生物
• 英文名称: hexadecyl 3-(1H-indol-3-yl)propanoate
• CAS: 1421957-26-7
• 化学式: C₂₇H₄₃NO₂
• 分子量: 413.644
• InChiKey: NPYGCWFTHFBYRN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  9.8
• 重原子数：
  30
• 可旋转键数：
  19
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  42.1
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  3-吲哚丙酸 在 碘 、 zinc trifluoromethanesulfonate 作用下， 以 乙腈 为溶剂， 反应 4.67h， 生成 hexadecyl 3-(1H-indol-3-yl)propanoate
  参考文献：
  名称：

  Zn(OTf)₂-Promoted Chemoselective Esterification of Hydroxyl Group Bearing Carboxylic Acids

  摘要：

  Selective esterification of aliphatic and aromatic carboxylic acids with various alcohols is studied using triphenylphosphine, I-2, and a catalytic amount of Zn(OTf)(2). Use of this catalyst allows the formation of esters at a faster rate with good to excellent yield by activating the in situ generated acyloxyphosphonium ion intermediate. During the esterification process, both their aromatic and aliphatic hydroxyl groups are fully preserved from trans-esterification. The results show that the bulkiness and the reactivity of this doubly activated intermediate III control the selectivity and the rate of the reaction, respectively. The method is also useful for direct amidation reactions.

  DOI：

  10.1021/jo302502r

文献信息

• Ethyl 2-Cyano-2-(2-nitrobenzenesulfonyloxyimino)acetate (<i>o</i>-NosylOXY): A Recyclable Coupling Reagent for Racemization-Free Synthesis of Peptide, Amide, Hydroxamate, and Ester
  作者：Dharm Dev、Nani Babu Palakurthy、Kishore Thalluri、Jyoti Chandra、Bhubaneswar Mandal

  DOI：10.1021/jo500292m

  日期：2014.6.20

  byproducts that can be easily recovered and reused for the synthesis of the same reagent, making the method more environmentally friendly and cost-effective. The synthesis of amides, hydroxamates, peptides, and esters using this reagent is described. The synthesis of the difficult sequences, for example, the islet amyloid polypeptide (22–27) fragment (with a C-terminal Gly, H-Asn-Phe-Gly-Ala-Ile-Leu-Gly-NH2)

  酰胺和酯官能团的普遍存在使偶联反应极为重要。尽管可获得许多偶联试剂，但是制备常用且有效的试剂的方法繁琐。这些试剂会产生大量化学废物，并且缺乏可回收性。2-氰基-2-（2-硝基苯磺酰氧基亚氨基）乙酸乙酯（o-NosylOXY）是新一代偶联试剂的第一成员，可产生副产物，这些副产物可以轻松回收并再利用以合成同一试剂，从而使该方法更加环保且具有成本效益。描述了使用该试剂合成酰胺，异羟肟酸酯，肽和酯。困难序列的合成，例如，胰岛淀粉样多肽（22–27）片段（具有C末端Gly，H-Asn-Phe-Gly-Ala-Ile-Leu-Gly-NH 2）和酰基载体蛋白（65-74）片段（H-Val-Gln-Ala-Ala-Ile-Asp-Tyr-Ile-Asn-Gly-OH），遵循固相肽合成（SPPS）协议和淀粉样蛋白β（39–42）肽（Boc-Val-Val-IIe-Ala-OMe），遵循溶液相策略得到证明。
• Zn(OTf)₂-Promoted Chemoselective Esterification of Hydroxyl Group Bearing Carboxylic Acids
  作者：Narsimha Mamidi、Debasis Manna

  DOI：10.1021/jo302502r

  日期：2013.3.15

  Selective esterification of aliphatic and aromatic carboxylic acids with various alcohols is studied using triphenylphosphine, I-2, and a catalytic amount of Zn(OTf)(2). Use of this catalyst allows the formation of esters at a faster rate with good to excellent yield by activating the in situ generated acyloxyphosphonium ion intermediate. During the esterification process, both their aromatic and aliphatic hydroxyl groups are fully preserved from trans-esterification. The results show that the bulkiness and the reactivity of this doubly activated intermediate III control the selectivity and the rate of the reaction, respectively. The method is also useful for direct amidation reactions.