1-(2,4-Difluorophenyl)prop-2-en-1-one | 123184-17-8

• 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: 1-(2,4-Difluorophenyl)prop-2-en-1-one
• CAS: 123184-17-8
• 化学式: C₉H₆F₂O
• 分子量: 168.143
• InChiKey: PRSPFQORFUZLMD-UHFFFAOYSA-N

物化性质

• 沸点：
  221.1±40.0 °C(Predicted)
• 密度：
  1.192±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  1-(2,4-Difluorophenyl)prop-2-en-1-one 在 盐酸 、 2-(2-hydroxyethyl)-3-methyl-4-benzylthiazolium chloride 、 二异丁基氢化铝 、 对甲苯磺酸 、 三乙胺 作用下， 以 溶剂黄146 为溶剂， 反应 20.0h， 生成 3-[2-(2,4-Difluoro-phenyl)-5-isopropyl-pyrrol-1-yl]-propionaldehyde
  参考文献：
  名称：

  Inhibitors of cholesterol biosynthesis. 1. trans-6-(2-Pyrrol-1-ylethyl)-4-hydroxypyran-2-ones, a novel series of HMG-CoA reductase inhibitors. 1. Effects of structural modifications at the 2- and 5-positions of the pyrrole nucleus

  摘要：

  A novel series of trans-6-(2-pyrrol-1-ylethyl)-4-hydroxypyran-2-ones and their dihydroxy acid derivatives were prepared and evaluated for their ability to inhibit the enzyme HMG-CoA reductase in vitro. A systematic study of substitution at the 2- and 5-positions of the pyrrole ring revealed that optimum potency was realized with the 2-(4-fluorophenyl)-5-isopropyl derivative 8x, which possessed 30% of the in vitro activity of the potent fungal metabolite compactin (I). A molecular modeling analysis led to the description of a pharmacophore model characterized by (A) length limits of 5.9 and 3.3 A for the 2- and 5-substituents, respectively, as well as an overall width limit of 10.6 A across the pyrrole ring from the 2- to the 5-substituent and (B) an orientation of the ethyl(ene) bridge to the 4-hydroxypyran-2-one ring nearly perpendicular to the planes of the parent pyrrole, hexahydronaphthalene, and phenyl rings of the structures examined (Figure 3, theta = 80-110 degrees). Attempts to more closely mimic compactin's polar isobutyric ester side chain with the synthesis of 2-phenylpyrroles containing polar phenyl substituents resulted in analogues with equal or slightly reduced potencies when compared to the 2-[(unsubstituted or 4-fluoro)phenyl]pyrroles, supporting the hypothesis that inhibitory potency is relatively insensitive to side-chain polarity or charge distribution in this area.

  DOI：

  10.1021/jm00163a005

文献信息

• Thieme Chemistry Journal Awardees - Where Are They Now? Asymmetric Brønsted Acid Catalyzed Transfer Hydrogenations
  作者：Magnus Rueping、Erli Sugiono、Fenja Schoepke

  DOI：10.1055/s-0029-1219528

  日期：2010.4

  products under mild reaction conditions. 1 Introduction 2 Nature’s Reductions: Dehydrogenases as a Role Model 3 Bronsted Acid catalyzed Transfer Hydrogenation of Ketimines 4 Asymmetric Organocatalytic Reduction of Quinolines 5 Asymmetric Organocatalytic Reduction of N-Heterocycles 5.1 Asymmetric Bronsted Acid Catalyzed Hydrogenationof -Indoles 5.2 Asymmetric Bronsted Acid Catalyzed Hydrogenationof Benzoxazines

  不对称氢化在光学活性胺的合成中非常重要。该帐户重点介绍了第一个具有高度对映选择性并受自然界脱氢酶启发的无金属转移氢化反应的发展。进一步重点关注这种生物启发过程的扩展，以在温和的反应条件下提供各种有价值的生物活性产品和天然产品. 1 引言 2 自然还原：脱氢酶作为榜样 3 酮亚胺的布朗斯台德酸催化转移氢化 4 喹啉的不对称有机催化还原 5 N-杂环的不对称有机催化还原 5.1 不对称布朗斯台德酸催化氢化 - 吲哚 5.1 苯二氮唑的不对称布朗斯台德酸催化氢化反应, 苯并恶嗪酮类, 喹喔啉类,
• Mild Cobalt(III)-Catalyzed C-H Hydroarylation of Conjugated C=C/C=O Bonds
  作者：Jie Li、Zhao Zhang、Wenbo Ma、Mengyao Tang、Dawei Wang、Liang-Hua Zou

  DOI：10.1002/adsc.201700097

  日期：2017.5.17

  pyridyl, and pyrazolyl directing groups, thus overcoming the inherent C‐3 selectivity of an electrophilic indole derivatization. This approach provides an expedient route to indolyl‐substituted aldehydes, ketones, and esters with wide functional group tolerance. In addition, it also features high step‐ and atom‐economy.

  在温和的反应条件下，可实现高效的钴（III）催化的丙烯醛，烯酮和乙醛酸酯的C-2-选择性吲哚CHH氢芳基化反应。多功能的钴（III）催化剂在嘧啶基，吡啶基和吡唑基导向基团的辅助下表现出出色的位置选择性，从而克服了亲电吲哚衍生化固有的C-3选择性。这种方法为获得具有宽泛的官能团耐受性的吲哚基取代的醛，酮和酯提供了一条便捷的途径。此外，它还具有较高的阶跃和原子经济性。
• A Highly Enantioselective Brønsted Acid Catalyzed Reaction Cascade
  作者：Magnus Rueping、Andrey P. Antonchick

  DOI：10.1002/anie.200801435

  日期：2008.7.21
• Inhibitors of cholesterol biosynthesis. 1. trans-6-(2-Pyrrol-1-ylethyl)-4-hydroxypyran-2-ones, a novel series of HMG-CoA reductase inhibitors. 1. Effects of structural modifications at the 2- and 5-positions of the pyrrole nucleus
  作者：Bruce D. Roth、D. F. Ortwine、M. L. Hoefle、C. D. Stratton、D. R. Sliskovic、M. W. Wilson、R. S. Newton

  DOI：10.1021/jm00163a005

  日期：1990.1

  A novel series of trans-6-(2-pyrrol-1-ylethyl)-4-hydroxypyran-2-ones and their dihydroxy acid derivatives were prepared and evaluated for their ability to inhibit the enzyme HMG-CoA reductase in vitro. A systematic study of substitution at the 2- and 5-positions of the pyrrole ring revealed that optimum potency was realized with the 2-(4-fluorophenyl)-5-isopropyl derivative 8x, which possessed 30% of the in vitro activity of the potent fungal metabolite compactin (I). A molecular modeling analysis led to the description of a pharmacophore model characterized by (A) length limits of 5.9 and 3.3 A for the 2- and 5-substituents, respectively, as well as an overall width limit of 10.6 A across the pyrrole ring from the 2- to the 5-substituent and (B) an orientation of the ethyl(ene) bridge to the 4-hydroxypyran-2-one ring nearly perpendicular to the planes of the parent pyrrole, hexahydronaphthalene, and phenyl rings of the structures examined (Figure 3, theta = 80-110 degrees). Attempts to more closely mimic compactin's polar isobutyric ester side chain with the synthesis of 2-phenylpyrroles containing polar phenyl substituents resulted in analogues with equal or slightly reduced potencies when compared to the 2-[(unsubstituted or 4-fluoro)phenyl]pyrroles, supporting the hypothesis that inhibitory potency is relatively insensitive to side-chain polarity or charge distribution in this area.