5-bromo-2-(decyloxy)-1,3-dimethoxybenzene | 1318800-20-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 5-bromo-2-(decyloxy)-1,3-dimethoxybenzene
• CAS: 1318800-20-2
• 化学式: C₁₈H₂₉BrO₃
• 分子量: 373.33
• InChiKey: MQZDEVUSHYLITE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.99
• 重原子数：
  22.0
• 可旋转键数：
  12.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  27.69
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  5-bromo-2-(decyloxy)-1,3-dimethoxybenzene 、 9-methyl-9H-fluorene-9-carbonyl chloride 在 dichloro(cycloocta-1,5-diene)palladium (II) 、 N-甲基二环己基胺 、 potassium formate 、 四丁基碘化铵 、 tricyclohexylphosphine tetrafluoroborate 、 bis(dibenzylideneacetone)-palladium⁽⁰⁾ 、 tri tert-butylphosphoniumtetrafluoroborate 作用下， 反应 18.0h， 以68%的产率得到4-(n-decyloxy)-3,5-dimethoxybenzaldehyde
  参考文献：
  名称：

  Reductive Carbonylation of Aryl Halides Employing a Two-Chamber Reactor: A Protocol for the Synthesis of Aryl Aldehydes Including ¹³C- and D-Isotope Labeling

  摘要：

  A protocol has been developed for conducting the palladium-catalyzed reductive carbonylation of aryl iodides and bromides using 9-methylfluorene-9-carbonyl chloride (COgen) as a source of externally delivered carbon monoxide in a sealed two-chamber system (COware), and potassium formate as the in situ hydride source. The method is tolerant to a wide number Of functional groups positioned on the aromatic ring, and it can be exploited for the isotope labeling of the aldehyde group. Hence, reductive carbonylations run with (13)COgen provide a facile access to C-13-labeled aromatic aldehydes, whereas with DCO2K, the aldehyde is specifically labeled with deuterium. Two examples of double isotopic labeling are also demonstrated. Finally, the method was applied to the specific carbon-13 labeling of the beta-amyloid binding compound, florbetaben.

  DOI：

  10.1021/jo400741t

文献信息

• Pd-Catalyzed Carbonylative α-Arylation of Aryl Bromides: Scope and Mechanistic Studies
  作者：Dennis U. Nielsen、Camille Lescot、Thomas M. Gøgsig、Anders T. Lindhardt、Troels Skrydstrup

  DOI：10.1002/chem.201303384

  日期：2013.12.23

  Reaction conditions for the three‐component synthesis of aryl 1,3‐diketones are reported applying the palladium‐catalyzed carbonylative α‐arylation of ketones with aryl bromides. The optimal conditions were found by using a catalytic system derived from [Pd(dba)2] (dba=dibenzylideneacetone) as the palladium source and 1,3‐bis(diphenylphosphino)propane (DPPP) as the bidentate ligand. These transformations

  据报道，使用钯催化的酮与芳基溴化物的羰基化α-芳基化反应，可以合成芳基1,3-二酮的三组分反应条件。通过使用衍生自[Pd（dba）2 ]（dba =二亚苄基丙酮）作为钯源和1,3-双（二苯基膦基）丙烷（DPPP）作为二齿配体的催化体系找到了最佳条件。这些转化是在两室反应器COware中进行的，仅应用了从CO释放化合物9-甲基芴-9-羰基氯（COgen）产生的1.5当量的一氧化碳。该方法论证明可适用于多种芳基和杂芳基溴化物，从而导致多种芳基1,3-二酮。依靠31 P和进行13 C NMR光谱分析以确定可能的催化途径。我们的结果表明，[Pd（dba）2 ]和DPPP的组合仅在存在苯乙酮烯醇钠的情况下才对4-溴苯甲醚具有反应性，这表明[Pd（DPPP）（enolate）]阴离子是在生成苯丙酮之前最初生成的。氧化加成步骤。随后将CO插入[Pd（Ar）（DPPP）（烯酸酯）]物种中，提供了1,3-二
• Palladium-Catalyzed Approach to Primary Amides Using Nongaseous Precursors
  作者：Dennis U. Nielsen、Rolf H. Taaning、Anders T. Lindhardt、Thomas M. Gøgsig、Troels Skrydstrup

  DOI：10.1021/ol201808y

  日期：2011.8.19

  A simple protocol Is reported for the preparation of primary aryl amides under Pd-catalyzed carbonylation chemistry applying a two-chamber system with crystalline and nontransition metal based sources of carbon monoxide and ammonia. The method is suitable for the synthesis of a number of primary amides with good functional group tolerance. Incorporation of (CO)-C-13 Into the primary amide group was also found to be effective making this approach useful for accessing carbon isotope labeled derivatives.