6,7-dimethylcoumarin | 79252-42-9

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 英文名称: 6,7-dimethylcoumarin
• 英文别名: 6,7-dimethyl-2H-chromen-2-one；6,7-Dimethyl-2H-1-benzopyran-2-one；6,7-dimethylchromen-2-one
• CAS: 79252-42-9
• 化学式: C₁₁H₁₀O₂
• 分子量: 174.199
• InChiKey: UBLOOKRIGSUIOU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  6,7-dimethylcoumarin 在 N-溴代丁二酰亚胺(NBS) 、 偶氮二异丁腈 作用下， 以 氯苯 为溶剂， 生成 6,7-bis(bromomethyl)-2H-chromen-2-one
  参考文献：
  名称：

  苯并[g]香豆素类以外的线性香豆素类化合物：合成和有前途的特性

  摘要：

  苯并[ g ]香豆素以外的线性扩展的香豆素被称为香豆素，首次被成功合成。它们显示出令人兴奋的可见光吸收和明亮的橙红色发射。它们表现出高的热稳定性，光化学稳定性和空气稳定性。这种线性π扩展确实有利于香豆素，具有令人鼓舞的电荷传输特性和良好的器件稳定性。

  DOI：

  10.1002/ejoc.202001025
• 作为产物：
  描述：

  (E)-3-(3,4-dimethylphenyl)acrylic acid 在 占吨酮 、 Selectfluor 作用下， 以 二氯甲烷 为溶剂， 反应 10.0h， 以33%的产率得到6,7-dimethylcoumarin
  参考文献：
  名称：

  以x吨酮为光催化剂的肉桂酸衍生物的可见光促进氧化环化

  摘要：

  我们已经通过肉桂酸的串联双键异构化/氧化环化开发了一种香豆素衍生物的有效光催化合成方法。廉价，稳定的x吨酮用作光催化剂，易购的Selectfluor用作氧化剂。该方法可耐受各种官能团，并且通常可提供出色的化学收率。此外，肉桂酸酯的光催化氧化环化得到二聚的木脂素型产物。

  DOI：

  10.1039/d0ob02417a

文献信息

• Optically-Detectable Enzyme Substrates and Their Method of Use
  申请人：Life Technologies Corporation

  公开号：US20160139135A1

  公开（公告）日：2016-05-19

  The present invention relates to compounds that are substrates for an enzyme, and upon reaction with the enzyme provide a detectable response, such as an optically detectable response. In particular, the compounds have utility in detecting the presence of a β-lactamase in a sample. In addition to the compounds, methods are disclosed for analyzing a sample for the presence of a β-lactmase, for example, as an indicator of expression of a nucleic acid sequence including a sequence coding for a β-lactmase. Kits are disclosed that include the disclosed compounds and additional components, for example, cells, antibodies, a β-lactmase or instructions for using the components in an assay.

  本发明涉及一种酶底物化合物，与酶反应后产生可检测的响应，例如光学可检测的响应。具体而言，这些化合物在检测样品中β-内酰胺酶的存在方面具有实用性。除了这些化合物外，还公开了用于分析样品中β-内酰胺酶存在的方法，例如，作为表达包括编码β-内酰胺酶序列的核酸序列的指示器。还公开了包括这些化合物和额外组分的试剂盒，例如细胞、抗体、β-内酰胺酶或使用这些组分进行检测的说明书。
• [EN] LATENT ACIDS AND THEIR USE<br/>[FR] ACIDES LATENTS ET LEUR UTILISATION
  申请人：BASF SE

  公开号：WO2011104127A1

  公开（公告）日：2011-09-01

  The invention pertains to a compound generating an acid of the formula (I) or (II), for instance corresponding sulfonium and iodonium salts, as well as corresponding sulfonyloximes, Formula (I) and Formula (II), wherein X is CH2 or CO; Y is O, NR4, S, O(CO), O(CO)O, O(CO)NR4, OSO2, O(CS), or O(CS)NR4; R1 is for example C1-C18alkyl, C1-C10haloalkyl, C2-C12alkenyl, C4-C30cycloalkenyl, phenyl-C1-C3-alkyl, C3-C30cycloalkyl, C3-C30cycloalkyl-C1-C18alkyl, interrupted C2-C18alkyl, interrupted C3-C30cycloalkyl, interrupted C3-C30cycloalkyl-C1-C18alkyl, interrupted C4-C30cycloalkenyl, phenyl, naphthyl, anthracyl, phenanthryl, biphenylyl, fluorenyl or heteroaryl, all unsubstituted or are substituted; or R1 is NR12R13; R2 and R3 are for example C3-C30cycloalkylene, C3-C30cycloalkyl-C1-C18alkylene, C1-C18alkylene, C1-C10haloalkylene, C2-C12alkenylene, C4-C30cycloalkenylene, phenylene, naphthylene, anthracylene, phenanthrylene, biphenylene or heteroarylene; all unsubstituted or substituted; R4 is for example C3-C30cycloalkyl, C3-C30cycloalkyl-C1-C18alkyl, C1-C18alkyl, C1-C10haloalkyl, C2-C12alkenyl, C4-C30cycloalkenyl, phenyl-C1-C3-alkyl; R12 and R13 are for example C3-C30cycloalkyl, C3-C30cycloalkyl-C1-C18alkyl, C1-C18alkyl, C1-C10haloalkyl, C2-C12alkenyl, C4-C30cycloalkenyl, phenyl-C1-C3-alkyl, Ar, (CO)R15, (CO)OR15 or SO2R15; and Ar is phenyl, biphenylyl, fluorenyl, naphthyl, anthracyl, phenanthryl or heteroaryl, all unsubstituted or substituted.

  该发明涉及一种生成式(I)或(II)的酸的化合物，例如相应的砜和碘砜盐，以及相应的砜酮肟，式(I)和式(II)，其中X为CH2或CO；Y为O、NR4、S、O(CO)、O(CO)O、O(CO)NR4、OSO2、O(CS)或O(CS)NR4；R1例如为C1-C18烷基、C1-C10卤代烷基、C2-C12烯基、C4-C30环烯烃基、苯基-C1-C3-烷基、C3-C30环烷基、C3-C30环烷基-C1-C18烷基、中断的C2-C18烷基、中断的C3-C30环烷基、中断的C3-C30环烷基-C1-C18烷基、中断的C4-C30环烯烃基、苯基、萘基、蒽基、菲基、联苯基、芴基或杂环烯基，全部为未取代或取代；或R1为NR12R13；R2和R3例如为C3-C30环烷基、C3-C30环烷基-C1-C18烷基、C1-C18烷基、C1-C10卤代烷基、C2-C12烯基、C4-C30环烯烃基、苯基、萘基、蒽基、菲基、联苯基或杂环烯基；全部为未取代或取代；R4例如为C3-C30环烷基、C3-C30环烷基-C1-C18烷基、C1-C18烷基、C1-C10卤代烷基、C2-C12烯基、C4-C30环烯烃基、苯基-C1-C3-烷基；R12和R13例如为C3-C30环烷基、C3-C30环烷基-C1-C18烷基、C1-C18烷基、C1-C10卤代烷基、C2-C12烯基、C4-C30环烯烃基、苯基-C1-C3-烷基、Ar、(CO)R15、(CO)OR15或SO2R15；Ar为苯基、联苯基、芴基、萘基、蒽基、菲基或杂环烯基，全部为未取代或取代。
• Synthesis of coumarins by Pt-catalyzed hydroarylation of propiolic acids with phenols
  作者：Juzo Oyamada、Tsugio Kitamura

  DOI：10.1016/j.tet.2006.04.080

  日期：2006.7

  Synthesis of coumarins from phenols and propiolic acids was examined by using a Pt catalyst such as PtCl2/AgOTf, K2PtCl4/AgOTf, and K2PtCl4/AgOAc. Propiolic acid reacted even with less reactive phenols in trifluoroacetic acid to give coumarins and dihydrocoumarins. In the case of substituted propiolic acids, phenylpropiolic acid and 2-octynoic acid, the reactions proceeded selectively to afford coumarins

  通过使用Pt催化剂如PtCl 2 / AgOTf，K 2 PtCl 4 / AgOTf和K 2 PtCl 4 / AgOAc检查由酚和丙酸合成香豆素。丙酸甚至在三氟乙酸中与反应性较低的酚发生反应，得到香豆素和二氢香豆素。在取代的丙酸，苯丙酸和2-辛酸的情况下，反应选择性地进行，从而以高收率或高收率获得香豆素。
• A Convenient Synthesis of Coumarins by Palladium(II)-Catalyzed Reaction of Phenols with Propiolic Acids
  作者：Tsugio Kitamura、Masashi Kotani、Kiyomi Yamamoto、Juzo Oyamada、Yuzo Fujiwara

  DOI：10.1055/s-2004-822360

  日期：——

  A direct route to coumarin derivatives from phenols and propiolic acids has been developed. Phenols react with propiolic acids in the presence of Pd(OAc) 2 as a catalyst to give coumarins in good yields. The simple process occurs under mild conditions without any additives.

  已经开发了从酚类和丙炔酸获得香豆素衍生物的直接途径。在作为催化剂的 Pd(OAc) 2 存在下，酚与丙炔酸反应以良好的收率得到香豆素。简单的过程发生在温和的条件下，没有任何添加剂。
• Palladium Catalyzed Enantioselective Hayashi–Miyaura Reaction for Pharmaceutically Important 4-Aryl-3,4-dihydrocoumarins
  作者：Jixing Lai、Chen Yang、René Csuk、Baoan Song、Shengkun Li

  DOI：10.1021/acs.orglett.1c04366

  日期：2022.2.18

  The first palladium-catalyzed asymmetric addition of arylboronic acids to coumarins was successfully established, providing a straightforward asymmetric approach to achieving pharmaceutically important 4-aryl-3,4-dihydrocoumarins. This methodology features easily accessible and bench-stable ligands, a wide substrate scope, mild conditions, and accommodation of electron-withdrawing arylboronic acids

  成功地建立了第一个钯催化的芳基硼酸不对称加成香豆素，为获得药学上重要的 4-aryl-3,4-dihydrocoumarins 提供了一种直接的不对称方法。该方法的特点是易于获得和稳定的配体、广泛的底物范围、温和的条件以及吸电子芳基硼酸的适应性。