2,5-dimethylhex-5-en-3-one | 82471-34-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,5-dimethylhex-5-en-3-one
• 英文别名: 2,5-Dimethylhex-5-en-3-one
• CAS: 82471-34-9
• 化学式: C₈H₁₄O
• 分子量: 126.199
• InChiKey: ZWMLMTUXSNQFTC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  9
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2,5-dimethylhex-5-en-3-one 在 盐酸羟胺 、 sodium acetate 、 三乙胺 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 5.0h， 生成 2,5-dimethylhex-5-en-3-one O-acetyl oxime
  参考文献：
  名称：

  Copper‐Catalyzed Aza‐Sonogashira Cross‐Coupling To Form Ynimines: Development and Application to the Synthesis of Heterocycles

  摘要：

  AbstractNitrogen‐substituted alkynes, such as ynamines and ynamides, are versatile synthetic building blocks. Ynimines bearing additional nucleophilic and electrophilic centers relative to ynamines and ynamides are expected to have high synthetic potential. However, their chemical reactivity remains unexplored owing mainly to the lack of synthetic accessibility. We report herein a versatile copper‐catalyzed synthesis of ynimines from readily available O‐acetyl ketoximes and terminal alkynes. A wide range of O‐acetyl ketoximes derived from diaryl ketones, aryl alkyl ketones and dialkyl ketones underwent cross‐coupling with a diverse set of terminal alkynes to afford the ynimines in good to excellent yields. An unprecedented [5+1] heteroannulation reaction exploiting the reactivity of the ynimine generated in situ was subsequently developed for the synthesis of medicinally important heterocycles, including isoquinolines, azaindoles, azabenzofurans, azabenzothiophenes and carbolines.

  DOI：

  10.1002/anie.202110901
• 作为产物：
  描述：

  2,5-dimethyl-5-hexen-3-ol 在 sodium acetate 、 pyridinium chlorochromate 作用下， 以 二氯甲烷 为溶剂， 反应 24.0h， 以83%的产率得到2,5-dimethylhex-5-en-3-one
  参考文献：
  名称：

  通过溶液和机械化学合成使用高价氟碘试剂获得新型氟化杂环

  摘要：

  通过用氟碘试剂对 β,γ-不饱和腙和肟进行氟环化，开发了一种快速形成新型氟化四氢哒嗪和二氢恶嗪的有效策略。机械化学合成以与常规溶液合成相似的优异产率提供氟化四氢哒嗪，而通过球磨制备氟化二氢恶嗪的产率要好得多。

  DOI：

  10.1039/d1cc02587b

文献信息

• NOVEL NICOTINAMIDE DERIVATIVE OR SALT THEREOF
  申请人：FUJIWARA Hideyasu

  公开号：US20130116430A1

  公开（公告）日：2013-05-09

  An object of the present invention is to provide to a compound and a pharmaceutical composition, which have excellent Syk-inhibitory activity. The present invention provides a nicotinamide derivative represented by the following formula (I) (wherein R 1 represents a halogen atom; R 2 represents a C 1-12 alkyl group, a C 2-12 alkenyl group, a C 2-12 alkynyl group, a C 3-8 cycloalkyl group, an aryl group, an ar-C 1-6 alkyl group or a heterocyclic group, each optionally having at least one substituent; R 3 represents an aryl group or a heterocyclic group each optionally having at least one substituent; and R 4 and R 5 each independently represent a hydrogen atom; and R 2 and R 4 may form a cyclic amino group optionally having at least one substituent together with the nitrogen atom to which they bind) or a salt thereof, and a pharmaceutical composition for use in the treatment of a Syk-related disease which comprises the nicotinamide derivative or a salt thereof.

  本发明的目的是提供一种具有优异的Syk抑制活性的化合物和制药组合物。本发明提供了一种由以下式(I)表示的烟酰胺衍生物（其中R1表示卤素原子；R2表示C1-12烷基、C2-12烯基、C2-12炔基、C3-8环烷基、芳基、芳基-C1-6烷基或杂环基，每种均可选地具有至少一个取代基；R3表示芳基或杂环基，每种均可选地具有至少一个取代基；R4和R5各自独立地表示氢原子；且R2和R4可以与它们结合的氮原子一起形成具有至少一个取代基的环状氨基团）或其盐，并且用于治疗Syk相关疾病的制药组合物包括该烟酰胺衍生物或其盐。
• Terminal Alkynes as One‐Carbon Donors in [5+1] Heteroannulation: Synthesis of Pyridines via Ynimine Intermediates and Application in the Total Synthesis of Anibamine B
  作者：Rémi Lavernhe、Qian Wang、Jieping Zhu

  DOI：10.1002/anie.202303537

  日期：——

  accessible β,γ-unsaturated oxime esters and terminal alkynes with complete regiochemical control and excellent functional-group compatibility. The first total synthesis of the indolizinium alkaloid anibamine B was accomplished featuring this novel pyridine synthesis as a key step.

  二到五取代的吡啶是在一次操作中从易于获得的 β,γ-不饱和肟酯和末端炔烃合成的，具有完全的区域化学控制和优异的官能团相容性。以这种新型吡啶合成为关键步骤，完成了吲哚嗪生物碱 anibamine B 的首次全合成。
• US8809371B2
  申请人：——

  公开号：US8809371B2

  公开（公告）日：2014-08-19
• US8895585B2
  申请人：——

  公开号：US8895585B2

  公开（公告）日：2014-11-25
• Copper‐Catalyzed Aza‐Sonogashira Cross‐Coupling To Form Ynimines: Development and Application to the Synthesis of Heterocycles
  作者：Rémi Lavernhe、Rubén O. Torres‐Ochoa、Qian Wang、Jieping Zhu

  DOI：10.1002/anie.202110901

  日期：2021.11.2

  AbstractNitrogen‐substituted alkynes, such as ynamines and ynamides, are versatile synthetic building blocks. Ynimines bearing additional nucleophilic and electrophilic centers relative to ynamines and ynamides are expected to have high synthetic potential. However, their chemical reactivity remains unexplored owing mainly to the lack of synthetic accessibility. We report herein a versatile copper‐catalyzed synthesis of ynimines from readily available O‐acetyl ketoximes and terminal alkynes. A wide range of O‐acetyl ketoximes derived from diaryl ketones, aryl alkyl ketones and dialkyl ketones underwent cross‐coupling with a diverse set of terminal alkynes to afford the ynimines in good to excellent yields. An unprecedented [5+1] heteroannulation reaction exploiting the reactivity of the ynimine generated in situ was subsequently developed for the synthesis of medicinally important heterocycles, including isoquinolines, azaindoles, azabenzofurans, azabenzothiophenes and carbolines.