2-(9-bromononyl)-2-ethyl-1,3-dioxolane | 216753-13-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-(9-bromononyl)-2-ethyl-1,3-dioxolane
• CAS: 216753-13-8
• 化学式: C₁₄H₂₇BrO₂
• 分子量: 307.271
• InChiKey: SBKKNIONGSPGFU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.9
• 重原子数：
  17
• 可旋转键数：
  10
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-(9-bromononyl)-2-ethyl-1,3-dioxolane 在 copper(I) bromide dimethylsulfide complex 、 三氟化硼乙醚 、 四丁基氟化铵 、 lithium 、 三氟乙酸 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 5.5h， 生成 (+)-12-[(2'R,5'S,6'R)-5'-hydroxy-6'-(hydroxymethyl)piperidin-2'-yl]dodecan-3-one
  参考文献：
  名称：

  Rhodium-Catalyzed Cyclohydrocarbonylation:  Application to the Synthesis of (+)-Prosopinine and (−)-Deoxoprosophylline

  摘要：

  Efficient convergent total syntheses of (+)-prosopinine (1) and (-)-deoxoprosophylline (4) were accomplished using Rh-BIPHEPHOS complex-catalyzed cyclohydrocarbonylation as the key step. The Rh-BIPHEPHOS complex-catalyzed cyclohydrocarbonylation of I, derived from (R)-serine, at 65 degrees C and 4 atm of CO and H-2 (1:1) in ethanol afforded 6-ethoxypiperidine II, which was transformed to enantiopure (+)-prosopinine (1) in 3 steps. In a similar manner, (-)-deoxoprosophylline was synthesized through cyclohydrocarbonylation of IV derived from (S)-serine, giving 6-ethoxypiperidine V. The key intermediate V was transformed to enantiopure (-)-deoxoprosophylline (4) in 4 steps. These two short total syntheses clearly demonstrate the usefulness of the extremely regioselective cyclohydrocarbonylation process developed in these laboratories for the concise syntheses of piperidine alkaloids and related compounds.

  DOI：

  10.1021/jo9815608
• 作为产物：
  描述：

  10-溴癸醛 在 Celite 、 对甲苯磺酸 、 pyridinium chlorochromate 作用下， 以 四氢呋喃 、 二氯甲烷 、 甲苯 为溶剂， 反应 3.5h， 生成 2-(9-bromononyl)-2-ethyl-1,3-dioxolane
  参考文献：
  名称：

  Rhodium-Catalyzed Cyclohydrocarbonylation:  Application to the Synthesis of (+)-Prosopinine and (−)-Deoxoprosophylline

  摘要：

  Efficient convergent total syntheses of (+)-prosopinine (1) and (-)-deoxoprosophylline (4) were accomplished using Rh-BIPHEPHOS complex-catalyzed cyclohydrocarbonylation as the key step. The Rh-BIPHEPHOS complex-catalyzed cyclohydrocarbonylation of I, derived from (R)-serine, at 65 degrees C and 4 atm of CO and H-2 (1:1) in ethanol afforded 6-ethoxypiperidine II, which was transformed to enantiopure (+)-prosopinine (1) in 3 steps. In a similar manner, (-)-deoxoprosophylline was synthesized through cyclohydrocarbonylation of IV derived from (S)-serine, giving 6-ethoxypiperidine V. The key intermediate V was transformed to enantiopure (-)-deoxoprosophylline (4) in 4 steps. These two short total syntheses clearly demonstrate the usefulness of the extremely regioselective cyclohydrocarbonylation process developed in these laboratories for the concise syntheses of piperidine alkaloids and related compounds.

  DOI：

  10.1021/jo9815608

文献信息

• Addition of Organometallic Reagents to Chiral<i>N</i>‐Methoxylactams: Enantioselective Syntheses of Pyrrolidines and Piperidines
  作者：Mascha Jäkel、Jianping Qu、Tobias Schnitzer、Günter Helmchen

  DOI：10.1002/chem.201302735

  日期：2013.12.2

  Enantioselective iridium‐catalyzed allylic substitutions were used to prepare N‐allyl hydroxamic acid derivatives that were suitable for ring‐closing metathesis, giving N‐methoxylactams. Reactions of these derivatives with Grignard or organolithium compounds gave hemiaminals, which could be reduced diastereoselectively via acyliminium intermediates to give cis‐piperidines or cis‐pyrrolidines with substituents

  用对映选择性的铱催化的烯丙基取代基制备适合于闭环易位的N-烯丙基异羟肟酸衍生物，得到N-甲氧基内酰胺。这些衍生物与格氏试剂或有机锂化合物的反应，得到hemiaminals，其可非对映选择性经由acyliminium中间体，得到降低顺-哌啶或顺-pyrrolidines与取代基在2,6-或2,5-位置处分别。此外，可以通过与氰化钾/ AcOH进行相应反应来合成具有季碳中心的化合物。该程序应用于生物碱（-）-209D和（+）-脯氨酸的合成。
• An Expeditious and Solvent-Free Synthesis of 2-Amino-Substituted Isoflav-3-enes Using Microwave Irradiation
  作者：Rajender S. Varma、Rajender Dahiya

  DOI：10.1021/jo980985r

  日期：1998.10.1