octa-6,7-dienal | 78631-35-3

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: octa-6,7-dienal
• CAS: 78631-35-3
• 化学式: C₈H₁₂O
• 分子量: 124.183
• InChiKey: LXQLIROBHDAOQL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.09
• 重原子数：
  9.0
• 可旋转键数：
  5.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  17.07
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  octa-6,7-dienal 在 titanium(IV) tetraethanolate 、 bis(η3-allyl-μ-chloropalladium(II)) 、 二乙二醇二甲醚 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 反应 4.0h， 生成 (-)-(S)-2-methyl-N-[(1R,2S)-2-{1-(trimethylstannyl)vinyl}-cyclohexyl]propane-2-sulfinamide
  参考文献：
  名称：

  Regulation of Diastereoselectivity in the Carbocyclization of Allenyl (S)-N-tert-Butylsulfinimines through a Three-Component Assembly

  摘要：

  Allenyl sulfinimines can be stereoselectively cyclized with hexamethylditin under palladium catalysis conditions followed by a selection of additives for an activated transmetalation. Reactivity and diastereoselectivity for the cyclization strongly depend on the characteristics of additives. A highly diastereoselective synthesis of five-membered rings is achieved from the reaction of the corresponding allenyl (5)-N-tert-butylsulfinimies through the following sequence. After the distannylation of the allenyl group with hexamethylditin catalyzed by the Pd complex, stereochemical routes are additive dependent: addition of SnCl4 affords a cis ring exclusively, whereas a trans ring is formed predominantly by the introduction of B-bromocatecholborane. Extension of the methodology to the synthesis of six-membered cis rings is achieved by using B-bromocatecholborane. Stereochemical relationships of products were unambiguously deduced by X-ray crystallography.

  DOI：

  10.1021/jo4025072
• 作为产物：
  描述：

  5-((四氢吡喃-2-基)氧基)-1-溴戊烷 在 正丁基锂 、 草酰氯 、 potassium carbonate 、 对甲苯磺酸 、 二甲基亚砜 、 二异丙胺 、 sodium iodide 、 copper(I) bromide 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 甲醇 、 正己烷 、 二氯甲烷 、 丙酮 为溶剂， 反应 82.75h， 生成 octa-6,7-dienal
  参考文献：
  名称：

  Dual Amine and Palladium Catalysis in Diastereo- and Enantioselective Allene Carbocyclization Reactions

  摘要：

  A pyrrolidine and Pd catalyzed diastereoselective carbocyclization of aldehyde and ketone-linked allenes has been developed. The cooperative organo/metal-catalyzed cyclization reaction, which presumably proceeds via an enamine intermediate, is efficient and broad in scope. Also, it has been extended to a catalytic asymmetric variant using diarylprolinol-based organocatalysts to afford substituted cyclopentane and pyrrolidine reaction products in up to 82% ee.

  DOI：

  10.1021/ol303128s

文献信息

• Ketyl−Allene Cyclizations Promoted by Samarium(II) Iodide
  作者：Gary A. Molander、Elizabeth Pollina Cormier

  DOI：10.1021/jo047887s

  日期：2005.4.1

  Samarium(II) iodide has proven to be an effective reagent for intramolecular reductive coupling reactions. Previous investigations of intramolecular ketyl−olefin coupling reactions provided carbocycles in excellent yield and good diastereoselectivity. This method has been extended to ketyl cyclizations with allenes. Substrates leading to both carbocycles and heterocycles in a selective manner are explored

  碘化已被证明是分子内还原偶联反应的有效试剂。分子内酮基-烯烃偶联反应的先前研究提供了具有优异收率和良好非对映选择性的碳环。该方法已扩展到用烯丙基环进行酮基环化反应。探索了以选择性方式导致碳环和杂环的底物。
• Stereoselective Synthesis of Chiral Polycyclic Indolic Architectures through Pd⁰-Catalyzed Tandem Deprotection/Cyclization of Tetrahydro-β-carbolines on Allenes
  作者：Valérian Gobé、Xavier Guinchard

  DOI：10.1002/chem.201500273

  日期：2015.6.1

  Enantioenriched N‐allyl tetrahydro‐β‐carbolines were prepared by chiral phosphoric acid‐catalyzed Pictet–Spengler reactions. The compounds undergo Pd0‐catalyzed cyclizations through a tandem deprotection/cyclization process. The regioselectivity of the attack is controlled by the chain length and by the substitution pattern of the allene function. Products resulting from 5‐exo‐ or 6‐exo‐attack were obtained

  通过手性磷酸催化的Pictet-Spengler反应制备了对映体富集的N-烯丙基四氢-β-咔啉。这些化合物通过串联的脱保护/环化过程经历Pd 0催化的环化。攻击的区域选择性由链长和丙二烯官能团的取代模式控制。从5 exo-或6 exo-攻击获得的产物的非对映异构体比例高达95：5。Azepinopyrrido [3,4 b ]吲哚通过7-获得内切-cyclizations。
• Pd(0)-Catalyzed Tandem Deprotection/Cyclization of Tetrahydro-β-carbolines on Allenes: Application to the Synthesis of Indolo[2,3-<i>a</i>]quinolizidines
  作者：Valerian Gobé、Xavier Guinchard

  DOI：10.1021/ol500448j

  日期：2014.4.4

  The pallado-catalyzed tandem deprotection/cyclization reaction of enantioenriched N-allyl tetrahydro-β-carbolines on allenes is described. The first step generates in situ a deprotected tetrahydro-β-carboline, which then undergoes a cyclization on the allene function via an intermediate π-allyl Pd(II) derivative. This reaction results in the synthesis of various chiral indolic tetracycles (mainly indolo[2

  描述了烯丙基上的对映体富集的N-烯丙基四氢-β-咔啉的帕拉多催化的串联脱保护/环化反应。第一步是原位生成脱保护的四氢-β-咔啉，然后通过中间的π-烯丙基Pd（II）衍生物对丙二烯官能团进行环化。该反应导致在各种手性吲哚tetracycles的合成（主要是吲哚并[2,3一]喹嗪衍生物）呈递的乙烯基功能。
• 一种铁催化的醇氧化酯化制备羧酸酯的方法
  申请人：复旦大学

  公开号：CN117185883A

  公开（公告）日：2023-12-08

  一种铁催化的醇氧化酯化制备羧酸酯的方法。本发明公开了一种铁催化的以氧气或空气作为氧化剂，醇直接氧化酯化制备羧酸酯类化合物的方法，所述方法为在25℃‑60℃条件下，在有机溶剂中，以硝酸铁(Fe(NO3)3·9H2O)、氮氧化物和Lewis酸为催化剂，以氧气或空气作为氧化剂，醇直接氧化酯化生成羧酸酯类化合物。本发明操作简单，催化剂和原料廉价易得，反应条件温和，产率优秀，底物官能团兼容性较好，且反应规模可放大，反应过程对环境友好，不存在污染等诸多优点，具有工业化应用前景。
• Hopf, Henning; Kirsch, Reinhard, Angewandte Chemie, 1985, vol. 97, # 9, p. 796 - 797
  作者：Hopf, Henning、Kirsch, Reinhard

  DOI：——

  日期：——