(R)-1-methyl-3-oxocyclohexanecarbaldehyde

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (R)-1-methyl-3-oxocyclohexanecarbaldehyde
• 英文别名: (1R)-1-methyl-3-oxocyclohexane-1-carbaldehyde
• 化学式: C₈H₁₂O₂
• 分子量: 140.182
• InChiKey: GUSWHNLSSQAPFX-MRVPVSSYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.2
• 重原子数：
  10
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  34.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  在 2,3-二巯基丁二酸 、 臭氧 作用下， 生成 (R)-1-methyl-3-oxocyclohexanecarbaldehyde
  参考文献：
  名称：

  Enantioselective Nucleophilic Formylation and Cyanation of Conjugated Enones via Michael Addition of Formaldehyde SAMP-Hydrazone

  摘要：

  DOI：

  10.1021/ja9610500

文献信息

• Copper-Catalyzed Asymmetric Conjugate Addition of Trialkylaluminium Reagents to Trisubstituted Enones: Construction of Chiral Quaternary Centers
  作者：Magali Vuagnoux-d'Augustin、Alexandre Alexakis

  DOI：10.1002/chem.200701001

  日期：2007.11.26

  vinylalane species undergo enantioselective conjugate addition to a wide range of 2- or 3-substituted enones (cyclopent-2-enones, cyclohex-2-enones, 3-methyl cyclohept-2-enone) in the presence of catalytic amount of copper salt (copper thiophene carboxylate, [Cu(CH3CN)4]BF4 or [CuOTf]2C6H6) and tropos-phosphoramidite-based ligand. Thus, chiral quaternary centers can be built, with up to 98% ee after rigorous

  在催化作用下，Me3Al，Et3Al和乙烯基丙烷类物质进行对映选择性共轭加成，生成各种2-或3-取代的烯酮（环戊-2-烯酮，环己-2-烯酮，3-甲基环庚-2-烯酮）铜盐（噻吩羧酸铜，[Cu（CH3CN）4] BF4或[CuOTf] 2C6H6）和基于对位亚磷酰胺的配体。因此，经过严格优化实验条件后，可以建立具有高达98％ee的手性四元中心。结果表明，主要的重要参数是试剂引入的顺序。然后，将生成的对映体富集的烯醇铝和手性共轭加合物官能化并用于随后的反应。
• Formaldehyde Dialkylhydrazones as Neutral Formyl Anion and Cyanide Equivalents:  Nucleophilic Addition to Conjugated Enones
  作者：Elena Díez、Rosario Fernández、Consolación Gasch、José M. Lassaletta、José M. Llera、Eloísa Martín-Zamora、Juan Vázquez

  DOI：10.1021/jo970481d

  日期：1997.7.1

  A versatile methodology for the nucleophilic formylation and cyanation of conjugated enones is reported. The procedure is based on the use of formaldehyde dimethylhydrazone, which, acting as a neutral formyl anion equivalent, adds to preformed trialkylsilyl-enone complexes. Both 4-(silyloxy)-3-enal hydrazones 3 or deprotected 4-oxo aldehyde monohydrazones 4 can be obtained as products depending on quenching conditions. In full analogy, an asymmetric version of the reaction using chiral formaldehyde SAMP-hydrazone as a neutral synthon of the chiral formyl anion has been developed, giving rise to the corresponding adducts 5 and 6 in good yields and with excellent diastereoselectivities (de 85-greater than or equal to 98%). Ozonolysis or HCl-mediated hydrolysis of adducts 4 and 6 readily affords racemic and optically enriched 4-oxo aldehydes 7, respectively. Additionally, high-yielding MMPP-oxidative cleavage of 4-oxo hydrazones 4 and 6 has been performed to obtain Li-oxo nitriles 8 in racemic and optically enriched forms, respectively. In this way, interesting chiral bifunctional building blocks, some of them bearing newly created stereogenic quaternary centers, have been efficiently synthesized.