3,3-dimethyl-1-heptyne | 920-06-9

• 分子结构分类: 有机化合物 - 乙炔化物 - 碳化物
• 英文名称: 3,3-dimethyl-1-heptyne
• 英文别名: 3,3-Dimethyl-heptin-1；1,1-Dimethyl-pentylacetylen；3,3-Dimethylhept-1-in；3,3-dimethyl-hept-1-yne；3,3-Dimethylhept-1-yne
• CAS: 920-06-9
• 化学式: C₉H₁₆
• 分子量: 124.226
• InChiKey: UPTFUJJCRPSZJF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  9
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.78
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  3,3-dimethyl-1-heptyne 、 4-碘苯甲醚 在 bis-triphenylphosphine-palladium(II) chloride 、 copper(l) iodide 、 三乙胺 作用下， 以75 %的产率得到1-(3,3-dimethylhept-1-yn-1-yl)-4-methoxybenzene
  参考文献：
  名称：

  催化剂控制的炔烃 α-羰基阳离子的发散生成和转化**

  摘要：

  已经建立了由单一炔烃官能团产生的催化剂控制的α-羰基阳离子的发散生成及其发散的进一步转化。可以使用广谱的炔烃，包括芳基炔烃、炔酰胺、炔基醚和炔基硫醚。两个催化体系中的 DFT 计算都支持α-羰基阳离子通过 N−O 键断裂的中介作用。

  DOI：

  10.1002/anie.202302545
• 作为产物：
  描述：

  1-trimethylsilyl-3,3-dimethyl-1-heptyne 在 sodium methylate 作用下， 以 甲醇 为溶剂， 反应 2.5h， 生成 3,3-dimethyl-1-heptyne
  参考文献：
  名称：

  Toxicity of Pumiliotoxin 251D and Synthetic Analogs to the Cotton Pest Heliothis virescens

  摘要：

  A series of 13 simplified analogs of frog skin derived pumiliotoxin indolizidine alkaloids was prepared and evaluated for their toxicity to the larvae of the important cotton pest Heliothis virescens. The alkyl side chain of pumiliotoxin 251D was replaced with a variety of substituents designed to influence or restrict-its conformation and its ability to act as a site of metabolic detoxification. Significantly, a substituent in the R configuration at the C-2' carbon of the side chain was required for toxicity. Computational studies suggested that this substituent may control the active conformation of the side chain. No structural modification led to a significant improvement in toxicity over the natural product.

  DOI：

  10.1021/jf00052a037

文献信息

• Reactions of 3-alkyl- and 3,3-dialkyl-1-bromoallenes with organocuprates: Effects of the nature of the cuprate reagent on the regio- and stereoselectivity
  作者：Anna Maria Caporusso、Carmela Polizzi、Luciano Lardicci

  DOI：10.1016/s0040-4039(00)96867-9

  日期：1987.1

  Organocuprates induce 1,3- and direct substitution in 3-alkyl- and 3,3-dialkyl-1-bromo-1,2-dienes leading respectively to either terminal acetylenes or allenic hydrocarbons. The nature of the cuprate exerts a prominent role in determining both the regio- and the stereochemistry of these reactions.

  有机酸盐诱导3-烷基-和3,3-二烷基-1-溴-1,2-二烯中的1,3-和直接取代，分别导致末端乙炔或烯丙烃。铜酸盐的性质在确定这些反应的区域化学和立体化学中起着重要作用。
• Toxicity of Pumiliotoxin 251D and Synthetic Analogs to the Cotton Pest Heliothis virescens
  作者：Thomas M. Bargar、Renee M. Lett、Peter L. Johnson、James E. Hunter、C. P. Chang、Daniel J. Pernich、Mark R. Sabol、Michael R. Dick

  DOI：10.1021/jf00052a037

  日期：1995.4

  A series of 13 simplified analogs of frog skin derived pumiliotoxin indolizidine alkaloids was prepared and evaluated for their toxicity to the larvae of the important cotton pest Heliothis virescens. The alkyl side chain of pumiliotoxin 251D was replaced with a variety of substituents designed to influence or restrict-its conformation and its ability to act as a site of metabolic detoxification. Significantly, a substituent in the R configuration at the C-2' carbon of the side chain was required for toxicity. Computational studies suggested that this substituent may control the active conformation of the side chain. No structural modification led to a significant improvement in toxicity over the natural product.
• Catalyst‐Controlled Divergent Generations and Transformations of <i>α</i>‐Carbonyl Cations from Alkynes**
  作者：Junrui Zhou、Weilin Wang、Fenfang Zuo、Shupeng Liu、Pathan Mosim Amin、Kangbao Zhong、Ruopeng Bai、Youliang Wang

  DOI：10.1002/anie.202302545

  日期：2023.12.4

  Catalyst-controlled divergent generations of α-carbonyl cations from single alkyne functionalities and their divergent further transformations have been established. Broad spectrum of alkynes including aryl alkyne, ynamide, alkynyl ether, and alkynyl sulfide could be utilized. The intermediacy of α-carbonyl cations via the N−O bond cleavage was supported by DFT calculations in both catalytic systems

  已经建立了由单一炔烃官能团产生的催化剂控制的α-羰基阳离子的发散生成及其发散的进一步转化。可以使用广谱的炔烃，包括芳基炔烃、炔酰胺、炔基醚和炔基硫醚。两个催化体系中的 DFT 计算都支持α-羰基阳离子通过 N−O 键断裂的中介作用。