N-(4-bromo-2,6-difluorophenyl)-3,3-dimethylbutanamide | 1262897-92-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: N-(4-bromo-2,6-difluorophenyl)-3,3-dimethylbutanamide
• CAS: 1262897-92-6
• 化学式: C₁₂H₁₄BrF₂NO
• 分子量: 306.15
• InChiKey: LBPXKGMIIGCSQQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  17
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  29.1
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  N-(4-bromo-2,6-difluorophenyl)-3,3-dimethylbutanamide 在 盐酸 、 dichloro(cycloocta-1,5-diene)palladium (II) 、 三乙胺 、 4,5-双二苯基膦-9,9-二甲基氧杂蒽 、 magnesium chloride 作用下， 以 1,4-二氧六环 、 水 为溶剂， 反应 19.0h， 生成 N-(2,6-difluoro-4-(3-oxobutanoyl)phenyl)-3,3-dimethylbutanamide
  参考文献：
  名称：

  钯催化芳基卤化物与乙酰丙酮的羰基化偶联反应直接合成1,3-二酮

  摘要：

  举起你的镁！通过使用MgCl 2 / Et 3 N系统，可以从Pd催化的乙酰丙酮与芳基溴的羰基化α-芳基化反应生成芳基二酮（请参见方案）。该方法非常适合将碳同位素引入更复杂的结构中，因为仅使用化学计量的一氧化碳。

  DOI：

  10.1002/chem.201303872
• 作为产物：
  描述：

  3,3-二甲基丁酰氯 、 4-溴-2,6-二氟苯胺 在 吡啶 作用下， 以 1,2-二氯乙烷 为溶剂， 反应 18.0h， 以94%的产率得到N-(4-bromo-2,6-difluorophenyl)-3,3-dimethylbutanamide
  参考文献：
  名称：

  Discovery of Phosphoric Acid Mono-{2-[(E/Z)-4-(3,3-dimethyl-butyrylamino)-3,5-difluoro-benzoylimino]-thiazol-3-ylmethyl} Ester (Lu AA47070): A Phosphonooxymethylene Prodrug of a Potent and Selective hA_2A Receptor Antagonist

  摘要：

  The discovery and structure-activity relationship of a series of hA(2A) receptor antagonists is described. Compound 28 was selected from the series as a potent and selective compound and was shown to be efficacious in an in vivo model of Parkinson's disease. It had acceptable ADME properties; however, the low intrinsic solubility of this compound was limiting for its developability, because the oral bioavailability from dosing in suspension was significantly lower than the oral bioavailability from solution dosage. As a consequence, prodrugs of 28 were prepared with dramatically increased aqueous solubility. The prodrugs efficiently delivered 28 into systemic circulation, with no detectable levels of prodrug in plasma samples. From this investigation, we selected 32 (Lu AA47070), a phosphonooxymethylene prodrug of 28, as a drug candidate.

  DOI：

  10.1021/jm1008659

文献信息

• Access to β-Keto Esters by Palladium-Catalyzed Carbonylative Coupling of Aryl Halides with Monoester Potassium Malonates
  作者：Signe Korsager、Dennis U. Nielsen、Rolf H. Taaning、Troels Skrydstrup

  DOI：10.1002/anie.201304072

  日期：2013.9.9

  New tricks for an old dog: The Pd‐catalyzed carbonylative α‐arylation of monoethyl potassium malonates with aryl bromides and reactive aryl chlorides provides a simple and direct route to aryl β‐ketoesters. Because only stoichiometric amounts of carbon monoxide are employed, the method is ideal for the introduction of carbon isotopes into more complex structures.

  老狗的新招数：丙二酸单乙酯钾的Pd催化羰基α-芳基化与芳基溴化物和反应性芳基氯化物的合成提供了一条简单而直接的途径制备芳基β-酮酸酯。由于仅使用化学计量的一氧化碳，因此该方法非常适合将碳同位素引入更复杂的结构中。
• Access to 2-(Het)aryl and 2-Styryl Benzoxazoles via Palladium-Catalyzed Aminocarbonylation of Aryl and Vinyl Bromides
  作者：Karoline T. Neumann、Anders T. Lindhardt、Benny Bang-Andersen、Troels Skrydstrup

  DOI：10.1021/acs.orglett.5b00642

  日期：2015.5.1

  procedure for the synthesis of either 2-(hetero)aryl or 2-styryl benzoxazoles is reported, starting from aryl and vinyl bromides, respectively, involving an initial aminocarbonylation with 2-aminophenols as nucleophiles followed by an acid mediated ring closure to generate the heterocycle. The methodology displays a broad substrate scope in moderate to excellent yields and can be exploited for 13C-isotope

  报道了一种顺序一锅法合成2-（杂）芳基或2-苯乙烯基苯并恶唑的方法，该方法分别从芳基和乙烯基溴开始，涉及以2-氨基酚为亲核试剂的初始氨基羰基化反应，然后是酸介导的环闭合以生成杂环。该方法显示了中等范围到优异产量的广泛底物范围，可用于13 C同位素标记。最后，将此羰基化方案应用于潜在的阿尔茨海默氏菌斑粘合剂和选择性PPAR拮抗剂的合成，包括用13 C-一氧化碳进行位点特异性标记。
• Effective Palladium-Catalyzed Hydroxycarbonylation of Aryl Halides with Substoichiometric Carbon Monoxide
  作者：Signe Korsager、Rolf H. Taaning、Troels Skrydstrup

  DOI：10.1021/ja3114032

  日期：2013.2.27

  A protocol for the Pd-catalyzed hydroxycarbonylation of aryl iodides, bromides, and chlorides has been developed using only 1-5 mol % of CO, corresponding to a p(CO) as low as 0.1 bar. Potassium formate is the only stoichiometric reagent, acting as a mildly basic nucleophile and a reservoir of CO. The substoichiometric CO could be delivered to the reaction from an acyl-Pd(II) precatalyst, which provides

  已开发出一种用于芳基碘化物、溴化物和氯化物的 Pd 催化羟基羰基化的方案，仅使用 1-5 mol% 的 CO，对应于低至 0.1 bar 的 ap(CO)。甲酸钾是唯一的化学计量试剂，作为温和的碱性亲核试剂和 CO 的储库。亚化学计量的 CO 可以从酰基-Pd(II) 预催化剂输送到反应中，提供 CO 和活性催化剂，和从而避免了处理有毒气体的需要。
• Pd‐Catalyzed Difluoromethylations of Aryl Boronic Acids, Halides, and Pseudohalides with ICF ₂ H Generated ex Situ
  作者：Oliver R. Gedde、Andreas Bonde、Peter I. Golbækdal、Troels Skrydstrup

  DOI：10.1002/chem.202200997

  日期：2022.6.15

  ex-situ generation of difluoroiodomethane (DFIM) and its immediate use in a Pd-catalyzed difluoromethylation of aryl boronic acids and ester derivatives in a two-chamber reactor is reported. Heating a solution of bromodifluoroacetic acid with sodium iodide in sulfolane proved to be effective for the generation of near stoichiometric amounts of DFIM for the ensuing catalytic coupling step. A two-step difluoromethylation

  据报道，二氟碘甲烷（DFIM）的便捷异位生成及其在双室反应器中钯催化的芳基硼酸和酯衍生物的二氟甲基化中的直接应用。事实证明，加热溴二氟乙酸与碘化钠的环丁砜溶液可有效生成接近化学计量的 DFIM，用于随后的催化偶联步骤。芳基（拟）卤化物与四羟基二硼作为低成本还原剂的两步二氟甲基化，均由 Pd 催化促进，被证明可以有效地将这种含氟 C1 基团安装到几个药物相关分子上。最后，通过简单地将 D2 O 添加到 DFIM 生成室，该方法被证明适用于氘掺入。
• Cobalt-catalyzed reductive alkynylation to construct C(sp)-C(sp3) and C(sp)-C(sp2) bonds
  作者：Lei Wan、Yizhou Tong、Xi Lu、Yao Fu

  DOI：10.1016/j.cclet.2023.109283

  日期：2024.7

  cross-electrophile coupling has emerged as a reliable method for constructing carbon–carbon bonds. Herein, we report a general method, cobalt-catalyzed reductive alkynylation, to construct C(sp)-C(sp) and C(sp)-C(sp) bonds. This presented reaction has a broad substrate scope, enabling the efficient cross-electrophile coupling between alkynyl bromides with alkyl halides and aryl or alkenyl (pseudo)halides

  过渡金属催化的交叉亲电子偶联已成为构建碳-碳键的可靠方法。在此，我们报告了一种构建 C(sp)-C(sp) 和 C(sp)-C(sp) 键的通用方法，即钴催化还原炔基化。该反应具有广泛的底物范围，能够实现炔基溴与烷基卤和芳基或烯基（假）卤之间的有效交叉亲电子偶联。该反应条件温和，可耐受多种官能团，适合生物活性分子的修饰和合成。